- Author:
- Catherine Lloyd <c.lloyd@auckland.ac.nz>
- Date:
- 2010-11-05 12:28:50+13:00
- Desc:
- Fixed links to the images so they are visible in the exposures.
- Permanent Source URI:
- http://models.cellml.org/workspace/viswanathan_shaw_rudy_1999/rawfile/d4ce8458da7e3e081a2600355838ec3f6e3f3c3f/viswanathan_shaw_rudy_1999_b.cellml
<?xml version="1.0"?>
<!--
This CellML file was generated on 25/10/2010 at 14:36:09 using:
COR (0.9.31.1393)
Copyright 2002-2010 Dr Alan Garny
http://cor.physiol.ox.ac.uk/ - cor@physiol.ox.ac.uk
CellML 1.0 was used to generate this model
http://www.cellml.org/
--><model xmlns="http://www.cellml.org/cellml/1.0#" xmlns:cmeta="http://www.cellml.org/metadata/1.0#" cmeta:id="viswanathan_1999_endo" name="viswanathan_1999_endo">
<documentation xmlns="http://cellml.org/tmp-documentation">
<article>
<articleinfo>
<title>Updated Luo-Rudy Mammalian Ventricular Model II</title>
<author>
<firstname>Catherine</firstname>
<surname>Lloyd</surname>
<affiliation>
<shortaffil>Bioengineering Institute, University of Auckland</shortaffil>
</affiliation>
</author>
</articleinfo>
<section id="sec_status">
<title>Model Status</title>
<para>
This version was created by Penny Noble of Oxford University and is known to run in PCEnv and COR.
This is the ENDOCARDIAL CELL VARIANT of the model.
</para>
</section>
<sect1 id="sec_structure">
<title>Model Structure</title>
<para>ABSTRACT: BACKGROUND: A growing body of evidence suggests that heterogeneity of ion channel expression and electrophysiological characteristics is an important property of the ventricular myocardium. The 2 components of the delayed rectifier potassium current, IKr (rapid) and IKs (slow), play a dominant role in the repolarization of the action potential and are important determinants of its duration. METHODS AND RESULTS: In this report, the effects of heterogeneities of IKr and IKs on action potential duration (APD) and its rate dependence (adaptation) are studied with the use of the LRd model of a mammalian ventricular cell. Results demonstrate the importance of IKs density variations in heterogeneity of repolarization. Cells with reduced IKs (eg, mid-myocardial M cells) display long APD and steep dependence of APD on rate. Mechanistically, accumulation of IKs activation and increased sodium calcium exchange current, INaCa, secondary to Na+ accumulation at a fast rate underlie the steep APD-rate relation of these cells. When cells are electrotonically coupled in a multicellular fiber through resistive gap junction, APD differences are reduced. The results demonstrate strong dependence of APD heterogeneity on the degree of intercellular coupling even in the normal physiological range. Highly reduced coupling maximizes APD heterogeneity. CONCLUSIONS: Heterogeneity of IKs:IKr density strongly influences APD and its rate dependence. However, in the intact myocardium, the degree of gap-junction coupling may be an important factor that determines the manifestation of APD heterogeneity and dispersion of repolarization. The clinical significance of this study is in the context of repolarization abnormalities and associated arrhythmias (eg, long QT syndrome and torsade de pointes).
</para>
<para>
The complete paper reference is cited below:
</para>
<para>
Effects of IKr and IKs heterogeneity on action potential duration and its rate dependence: a simulation study, Prakash C. Viswanathan, BE; Robin M. Shaw, PhD; and Yoram Rudy, PhD, 1999,
<emphasis>Circulation</emphasis>, 99, 2466-2474. <ulink url="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10318671&dopt=Abstract">PubMed ID: 10318671</ulink>
</para>
<informalfigure float="0" id="fig_cell_diagram_shaw">
<mediaobject>
<imageobject>
<objectinfo>
<title>cell diagram of the shaw and viswanathan models showing ionic currents, pumps and exchangers within the sarcolemma and the sarcoplasmic reticulum</title>
</objectinfo>
<imagedata fileref="viswanathan_1999.png"/>
</imageobject>
</mediaobject>
<caption>
A schematic diagram of the 1999 Viswanathan et al. model.</caption>
</informalfigure>
</sect1>
</article>
</documentation>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><rdf:Description rdf:nodeID="n1"><subject xmlns="http://purl.org/dc/elements/1.1/"><rdf:Description rdf:nodeID="n2"/></subject></rdf:Description><rdf:Description rdf:about="rdf:#b242fd22-92e3-4f14-af2e-6d0ad6d0e209"><creator xmlns="http://purl.org/dc/elements/1.1/"><rdf:Description rdf:about="rdf:#2e5aa548-bcd5-4535-bcc2-04726cd0c65d"/></creator><rdf:value xml:lang="en">unknown</rdf:value></rdf:Description><rdf:Description rdf:about="rdf:#43d4842e-a9b1-46b8-8639-e38f52fe138b"><Pubmed_id xmlns="http://www.cellml.org/bqs/1.0#" xml:lang="en">10318671</Pubmed_id><JournalArticle xmlns="http://www.cellml.org/bqs/1.0#"><rdf:Description rdf:about="rdf:#5efcedcd-757c-455a-8b4d-c323770eb58a"/></JournalArticle></rdf:Description><rdf:Description rdf:nodeID="n2"><rdf:value><rdf:Description rdf:nodeID="n3"/></rdf:value><subject_type xmlns="http://www.cellml.org/bqs/1.0#" xml:lang="en">keyword</subject_type></rdf:Description><rdf:Description rdf:about="rdf:#author1Vcard"><rdf:type><rdf:Description rdf:about="http://www.cellml.org/bqs/1.0#Person"/></rdf:type><N xmlns="http://www.w3.org/2001/vcard-rdf/3.0#"><rdf:Description rdf:about="rdf:#author1VcardN"/></N></rdf:Description><rdf:Description rdf:about="rdf:#46f01dd6-3fb4-408b-a452-b2fdb61a76d0"><N xmlns="http://www.w3.org/2001/vcard-rdf/3.0#"><rdf:Description rdf:about="rdf:#bb441bc9-b9a8-4a3b-a4ff-59313be21183"/></N><EMAIL xmlns="http://www.w3.org/2001/vcard-rdf/3.0#"><rdf:Description rdf:about="rdf:#ab5b8609-35e3-4ee2-83c9-85eea88bceeb"/></EMAIL><ORG xmlns="http://www.w3.org/2001/vcard-rdf/3.0#"><rdf:Description rdf:about="rdf:#fc4d0263-c3b6-410a-9256-47c913768f3c"/></ORG></rdf:Description><rdf:Description rdf:about="rdf:#5efcedcd-757c-455a-8b4d-c323770eb58a"><issue xmlns="http://www.cellml.org/bqs/1.0#" xml:lang="en">unknown</issue><title xmlns="http://purl.org/dc/elements/1.1/" xml:lang="en">Effects of IKr and IKs heterogeneity on action potential duration and its rate dependence: a simulation study</title><volume xmlns="http://www.cellml.org/bqs/1.0#" xml:lang="en">99 18</volume><first_page xmlns="http://www.cellml.org/bqs/1.0#" xml:lang="en">2466</first_page><Journal xmlns="http://www.cellml.org/bqs/1.0#"><rdf:Description rdf:about="rdf:#c13606bf-8a63-429e-9372-c700ce43f88a"/></Journal><issued xmlns="http://purl.org/dc/terms/"><rdf:Description rdf:about="rdf:#054a4594-086e-4709-826b-4e5606a658a2"/></issued><last_page xmlns="http://www.cellml.org/bqs/1.0#" xml:lang="en">2474</last_page><creator xmlns="http://purl.org/dc/elements/1.1/"><rdf:Description rdf:about="rdf:#citationAuthorsSeq"/></creator></rdf:Description><rdf:Description rdf:about="rdf:#054a4594-086e-4709-826b-4e5606a658a2"><W3CDTF xmlns="http://purl.org/dc/terms/" xml:lang="en">1999-05-11</W3CDTF></rdf:Description><rdf:Description rdf:about="rdf:#author2Vcard"><rdf:type><rdf:Description rdf:about="http://www.cellml.org/bqs/1.0#Person"/></rdf:type><N xmlns="http://www.w3.org/2001/vcard-rdf/3.0#"><rdf:Description rdf:about="rdf:#author2VcardN"/></N></rdf:Description><rdf:Description rdf:nodeID="n3"><rdf:type><rdf:Description rdf:about="http://www.w3.org/1999/02/22-rdf-syntax-ns#Bag"/></rdf:type><rdf:_3 xml:lang="en">ventricular myocyte</rdf:_3><rdf:_2 xml:lang="en">ikr</rdf:_2><rdf:_1 xml:lang="en">iks</rdf:_1><rdf:_7 xml:lang="en">cardiac</rdf:_7><rdf:_5 xml:lang="en">Ventricular Myocyte</rdf:_5><rdf:_6 xml:lang="en">electrophysiology</rdf:_6><rdf:_4 xml:lang="en">calcium dynamics</rdf:_4></rdf:Description><rdf:Description rdf:about="rdf:#775a23fb-5d55-4cb1-ad02-56d2d4014c08"><W3CDTF xmlns="http://purl.org/dc/terms/" xml:lang="en">2006-01-01</W3CDTF></rdf:Description><rdf:Description rdf:about="rdf:#author1VcardN"><Other xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">C</Other><Given xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">P</Given><Family xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">Viswanathan</Family></rdf:Description><rdf:Description rdf:about="rdf:#author3VcardN"><Given xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">Y</Given><Family xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">Rudy</Family></rdf:Description><rdf:Description rdf:nodeID="n4"><rdf:rest><rdf:Description rdf:about="http://www.w3.org/1999/02/22-rdf-syntax-ns#nil"/></rdf:rest><rdf:first><rdf:Description rdf:nodeID="n5"/></rdf:first></rdf:Description><rdf:Description rdf:nodeID="n5"><pointDensity xmlns="http://www.cellml.org/metadata/simulation/1.0#nonstandard-" xml:lang="en">100000</pointDensity><maximumStepSize xmlns="http://www.cellml.org/metadata/simulation/1.0#" xml:lang="en">.1</maximumStepSize><endingValue xmlns="http://www.cellml.org/metadata/simulation/1.0#" xml:lang="en">1</endingValue></rdf:Description><rdf:Description rdf:about="#viswanathan_1999"><title xmlns="http://purl.org/dc/elements/1.1/" xml:lang="en">unknown</title><reference xmlns="http://www.cellml.org/bqs/1.0#"><rdf:Description rdf:about="rdf:#43d4842e-a9b1-46b8-8639-e38f52fe138b"/></reference><reference xmlns="http://www.cellml.org/bqs/1.0#"><rdf:Description rdf:nodeID="n1"/></reference><simulation xmlns="http://www.cellml.org/metadata/simulation/1.0#"><rdf:Description rdf:nodeID="n6"/></simulation><cmeta:comment><rdf:Description rdf:about="rdf:#b242fd22-92e3-4f14-af2e-6d0ad6d0e209"/></cmeta:comment></rdf:Description><rdf:Description rdf:about="rdf:#author2VcardN"><Other xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">M</Other><Given xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">R</Given><Family xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">Shaw</Family></rdf:Description><rdf:Description rdf:about="rdf:#citationAuthorsSeq"><rdf:type><rdf:Description rdf:about="http://www.w3.org/1999/02/22-rdf-syntax-ns#Seq"/></rdf:type><rdf:_3><rdf:Description rdf:about="rdf:#author3Vcard"/></rdf:_3><rdf:_2><rdf:Description rdf:about="rdf:#author2Vcard"/></rdf:_2><rdf:_1><rdf:Description rdf:about="rdf:#author1Vcard"/></rdf:_1></rdf:Description><rdf:Description rdf:about="rdf:#ab5b8609-35e3-4ee2-83c9-85eea88bceeb"><rdf:type><rdf:Description rdf:about="http://imc.org/vCard/3.0#internet"/></rdf:type><rdf:value xml:lang="en">unknown</rdf:value></rdf:Description><rdf:Description rdf:about="rdf:#2e5aa548-bcd5-4535-bcc2-04726cd0c65d"><FN xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">unknown</FN></rdf:Description><rdf:Description rdf:about="rdf:#bb441bc9-b9a8-4a3b-a4ff-59313be21183"><Other xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">unknown</Other><Given xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">unknown</Given><Family xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">unknown</Family></rdf:Description><rdf:Description rdf:about="rdf:#fc4d0263-c3b6-410a-9256-47c913768f3c"><Orgunit xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">unknown</Orgunit><Orgname xmlns="http://www.w3.org/2001/vcard-rdf/3.0#" xml:lang="en">unknown</Orgname></rdf:Description><rdf:Description rdf:about=""><title xmlns="http://purl.org/dc/elements/1.1/" xml:lang="en">Effects of IKr and IKs heterogeneity on action potential duration and its rate dependence: a simulation study (Endocardial Cell Model)</title><creator xmlns="http://purl.org/dc/elements/1.1/"><rdf:Description rdf:about="rdf:#46f01dd6-3fb4-408b-a452-b2fdb61a76d0"/></creator><created xmlns="http://purl.org/dc/terms/"><rdf:Description rdf:about="rdf:#775a23fb-5d55-4cb1-ad02-56d2d4014c08"/></created></rdf:Description><rdf:Description rdf:about="rdf:#c13606bf-8a63-429e-9372-c700ce43f88a"><title xmlns="http://purl.org/dc/elements/1.1/" xml:lang="en">Circulation</title></rdf:Description><rdf:Description rdf:about="rdf:#author3Vcard"><rdf:type><rdf:Description rdf:about="http://www.cellml.org/bqs/1.0#Person"/></rdf:type><N xmlns="http://www.w3.org/2001/vcard-rdf/3.0#"><rdf:Description rdf:about="rdf:#author3VcardN"/></N></rdf:Description><rdf:Description rdf:nodeID="n6"><boundIntervals xmlns="http://www.cellml.org/metadata/simulation/1.0#"><rdf:Description rdf:nodeID="n4"/></boundIntervals></rdf:Description></rdf:RDF> <units name="ms">
<unit prefix="milli" units="second"/>
</units>
<units name="per_ms">
<unit exponent="-1" units="ms"/>
</units>
<units name="millivolt">
<unit prefix="milli" units="volt"/>
</units>
<units name="per_millivolt">
<unit exponent="-1" units="millivolt"/>
</units>
<units name="ms_per_millivolt">
<unit units="ms"/>
<unit units="per_millivolt"/>
</units>
<units name="per_millivolt_ms">
<unit units="per_millivolt"/>
<unit units="per_ms"/>
</units>
<units name="millivolt_per_ms">
<unit units="millivolt"/>
<unit units="per_ms"/>
</units>
<units name="milliS_per_microF">
<unit prefix="milli" units="siemens"/>
<unit exponent="-1" prefix="micro" units="farad"/>
</units>
<units name="cm2">
<unit exponent="2" prefix="centi" units="metre"/>
</units>
<units name="milliS_per_cm2">
<unit prefix="milli" units="siemens"/>
<unit exponent="-2" prefix="centi" units="metre"/>
</units>
<units name="nanoS_per_cm2">
<unit prefix="nano" units="siemens"/>
<unit exponent="-2" prefix="centi" units="metre"/>
</units>
<units name="microF_per_cm2">
<unit units="microF"/>
<unit exponent="-2" prefix="centi" units="metre"/>
</units>
<units name="microF">
<unit prefix="micro" units="farad"/>
</units>
<units name="microA_per_microF">
<unit prefix="micro" units="ampere"/>
<unit exponent="-1" prefix="micro" units="farad"/>
</units>
<units name="millimolar_per_ms">
<unit prefix="milli" units="mole"/>
<unit exponent="-1" units="litre"/>
<unit units="per_ms"/>
</units>
<units name="millimolar">
<unit prefix="milli" units="mole"/>
<unit exponent="-1" units="litre"/>
</units>
<units name="mM4">
<unit exponent="4" units="millimolar"/>
</units>
<units name="micromolar">
<unit prefix="micro" units="mole"/>
<unit exponent="-1" units="litre"/>
</units>
<units name="joule_per_kilomole_kelvin">
<unit units="joule"/>
<unit exponent="-1" prefix="kilo" units="mole"/>
<unit exponent="-1" units="kelvin"/>
</units>
<units name="coulomb_per_mole">
<unit units="coulomb"/>
<unit exponent="-1" units="mole"/>
</units>
<units name="mm">
<unit prefix="milli" units="metre"/>
</units>
<units name="micro_litre">
<unit prefix="micro" units="litre"/>
</units>
<units name="litre_per_farad_ms">
<unit units="litre"/>
<unit exponent="-1" units="farad"/>
<unit units="per_ms"/>
</units>
<component name="environment">
<variable cmeta:id="environment_time" name="time" public_interface="out" units="ms"/>
</component>
<component name="membrane">
<variable cmeta:id="membrane_V" initial_value="-88.984" name="V" public_interface="out" units="millivolt"/>
<variable initial_value="8314" name="R" public_interface="out" units="joule_per_kilomole_kelvin"/>
<variable initial_value="310" name="T" public_interface="out" units="kelvin"/>
<variable initial_value="96485" name="F" public_interface="out" units="coulomb_per_mole"/>
<variable name="I_st" units="microA_per_microF"/>
<variable name="time" public_interface="in" units="ms"/>
<variable name="i_Na" public_interface="in" units="microA_per_microF"/>
<variable name="i_Ca_L" public_interface="in" units="microA_per_microF"/>
<variable name="i_Ca_T" public_interface="in" units="microA_per_microF"/>
<variable name="i_Kr" public_interface="in" units="microA_per_microF"/>
<variable name="i_Ks" public_interface="in" units="microA_per_microF"/>
<variable name="i_K_ATP" public_interface="in" units="microA_per_microF"/>
<variable name="i_to" public_interface="in" units="microA_per_microF"/>
<variable name="i_K1" public_interface="in" units="microA_per_microF"/>
<variable name="i_Kp" public_interface="in" units="microA_per_microF"/>
<variable name="i_p_Ca" public_interface="in" units="microA_per_microF"/>
<variable name="i_Na_b" public_interface="in" units="microA_per_microF"/>
<variable name="i_Ca_b" public_interface="in" units="microA_per_microF"/>
<variable name="i_NaK" public_interface="in" units="microA_per_microF"/>
<variable name="i_NaCa" public_interface="in" units="microA_per_microF"/>
<variable name="i_ns_Ca" public_interface="in" units="microA_per_microF"/>
<variable name="dVdt" public_interface="out" units="millivolt_per_ms"/>
<variable initial_value="100" name="stim_start" units="ms"/>
<variable initial_value="99999000" name="stim_end" units="ms"/>
<variable initial_value="1000" name="stim_period" units="ms"/>
<variable initial_value="2" name="stim_duration" units="ms"/>
<variable initial_value="-25.5" name="stim_amplitude" units="microA_per_microF"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>I_st</ci>
<piecewise>
<piece>
<ci>stim_amplitude</ci>
<apply>
<and/>
<apply>
<geq/>
<ci>time</ci>
<ci>stim_start</ci>
</apply>
<apply>
<leq/>
<ci>time</ci>
<ci>stim_end</ci>
</apply>
<apply>
<leq/>
<apply>
<minus/>
<apply>
<minus/>
<ci>time</ci>
<ci>stim_start</ci>
</apply>
<apply>
<times/>
<apply>
<floor/>
<apply>
<divide/>
<apply>
<minus/>
<ci>time</ci>
<ci>stim_start</ci>
</apply>
<ci>stim_period</ci>
</apply>
</apply>
<ci>stim_period</ci>
</apply>
</apply>
<ci>stim_duration</ci>
</apply>
</apply>
</piece>
<otherwise>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="microA_per_microF">0</cn>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>V</ci>
</apply>
<ci>dVdt</ci>
</apply>
<apply>
<eq/>
<ci>dVdt</ci>
<apply>
<minus/>
<apply>
<plus/>
<ci>i_Na</ci>
<ci>i_Ca_L</ci>
<ci>i_Ca_T</ci>
<ci>i_Kr</ci>
<ci>i_Ks</ci>
<ci>i_K_ATP</ci>
<ci>i_to</ci>
<ci>i_K1</ci>
<ci>i_Kp</ci>
<ci>i_p_Ca</ci>
<ci>i_Na_b</ci>
<ci>i_Ca_b</ci>
<ci>i_NaK</ci>
<ci>i_NaCa</ci>
<ci>i_ns_Ca</ci>
<ci>I_st</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="fast_sodium_current">
<variable cmeta:id="fast_sodium_current_i_Na" name="i_Na" public_interface="out" units="microA_per_microF"/>
<variable name="E_Na" public_interface="out" units="millivolt"/>
<variable initial_value="16" name="g_Na" units="milliS_per_microF"/>
<variable name="time" private_interface="out" public_interface="in" units="ms"/>
<variable name="V" private_interface="out" public_interface="in" units="millivolt"/>
<variable name="R" public_interface="in" units="joule_per_kilomole_kelvin"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="T" public_interface="in" units="kelvin"/>
<variable name="Nai" public_interface="in" units="millimolar"/>
<variable name="Nao" public_interface="in" units="millimolar"/>
<variable name="m" private_interface="in" units="dimensionless"/>
<variable name="h" private_interface="in" units="dimensionless"/>
<variable name="j" private_interface="in" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>E_Na</ci>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
<ci>F</ci>
</apply>
<apply>
<ln/>
<apply>
<divide/>
<ci>Nao</ci>
<ci>Nai</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_Na</ci>
<apply>
<times/>
<ci>g_Na</ci>
<apply>
<power/>
<ci>m</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">3</cn>
</apply>
<ci>h</ci>
<ci>j</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Na</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="fast_sodium_current_m_gate">
<variable initial_value="0.00079287" name="m" public_interface="out" units="dimensionless"/>
<variable name="alpha_m" units="per_ms"/>
<variable name="beta_m" units="per_ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable initial_value="1e-5" name="delta_m" units="millivolt"/>
<variable name="E0_m" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>E0_m</ci>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">47.13</cn>
</apply>
</apply>
<apply>
<eq/>
<ci>alpha_m</ci>
<piecewise>
<piece>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt_ms">0.32</cn>
<ci>E0_m</ci>
</apply>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.1</cn>
</apply>
<ci>E0_m</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<geq/>
<apply>
<abs/>
<ci>E0_m</ci>
</apply>
<ci>delta_m</ci>
</apply>
</piece>
<otherwise>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">3.2</cn>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>beta_m</ci>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.08</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>V</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">11</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>m</ci>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>alpha_m</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>m</ci>
</apply>
</apply>
<apply>
<times/>
<ci>beta_m</ci>
<ci>m</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="fast_sodium_current_h_gate">
<variable initial_value="0.992806" name="h" public_interface="out" units="dimensionless"/>
<variable name="alpha_h" units="per_ms"/>
<variable name="beta_h" units="per_ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>alpha_h</ci>
<piecewise>
<piece>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.135</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">80</cn>
<ci>V</ci>
</apply>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">6.8</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<lt/>
<ci>V</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">40</cn>
</apply>
</apply>
</piece>
<otherwise>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0</cn>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>beta_h</ci>
<piecewise>
<piece>
<apply>
<plus/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">3.56</cn>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.079</cn>
<ci>V</ci>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">310000</cn>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.35</cn>
<ci>V</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<lt/>
<ci>V</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">40</cn>
</apply>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">0.13</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">10.66</cn>
</apply>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">11.1</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>h</ci>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>alpha_h</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>h</ci>
</apply>
</apply>
<apply>
<times/>
<ci>beta_h</ci>
<ci>h</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="fast_sodium_current_j_gate">
<variable initial_value="0.99511469" name="j" public_interface="out" units="dimensionless"/>
<variable name="alpha_j" units="per_ms"/>
<variable name="beta_j" units="per_ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>alpha_j</ci>
<piecewise>
<piece>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<apply>
<plus/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt_ms">127140</cn>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.2444</cn>
<ci>V</ci>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" type="e-notation" cellml:units="per_millivolt_ms">3.474 <sep/>
-5</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.04391</cn>
</apply>
<ci>V</ci>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">37.78</cn>
</apply>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.311</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">79.23</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<lt/>
<ci>V</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">40</cn>
</apply>
</apply>
</piece>
<otherwise>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0</cn>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>beta_j</ci>
<piecewise>
<piece>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.1212</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.01052</cn>
</apply>
<ci>V</ci>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.1378</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">40.14</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<lt/>
<ci>V</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">40</cn>
</apply>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.3</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" type="e-notation" cellml:units="per_millivolt">2.535 <sep/>
-7</cn>
</apply>
<ci>V</ci>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.1</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">32</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>j</ci>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>alpha_j</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>j</ci>
</apply>
</apply>
<apply>
<times/>
<ci>beta_j</ci>
<ci>j</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="L_type_Ca_channel">
<variable cmeta:id="L_type_Ca_channel_i_Ca_L" name="i_Ca_L" public_interface="out" units="microA_per_microF"/>
<variable name="i_CaCa" public_interface="out" units="microA_per_microF"/>
<variable name="i_CaK" public_interface="out" units="microA_per_microF"/>
<variable name="i_CaNa" public_interface="out" units="microA_per_microF"/>
<variable initial_value="0.75" name="gamma_Nai" public_interface="out" units="dimensionless"/>
<variable initial_value="0.75" name="gamma_Nao" public_interface="out" units="dimensionless"/>
<variable initial_value="0.75" name="gamma_Ki" public_interface="out" units="dimensionless"/>
<variable initial_value="0.75" name="gamma_Ko" public_interface="out" units="dimensionless"/>
<variable name="I_CaCa" units="microA_per_microF"/>
<variable name="I_CaK" units="microA_per_microF"/>
<variable name="I_CaNa" units="microA_per_microF"/>
<variable initial_value="0.00054" name="P_Ca" units="litre_per_farad_ms"/>
<variable initial_value="6.75e-7" name="P_Na" units="litre_per_farad_ms"/>
<variable initial_value="1.93e-7" name="P_K" units="litre_per_farad_ms"/>
<variable initial_value="1" name="gamma_Cai" units="dimensionless"/>
<variable initial_value="0.341" name="gamma_Cao" units="dimensionless"/>
<variable name="time" private_interface="out" public_interface="in" units="ms"/>
<variable name="V" private_interface="out" public_interface="in" units="millivolt"/>
<variable name="Cai" private_interface="out" public_interface="in" units="millimolar"/>
<variable name="R" public_interface="in" units="joule_per_kilomole_kelvin"/>
<variable name="T" public_interface="in" units="kelvin"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="Cao" public_interface="in" units="millimolar"/>
<variable name="Nao" public_interface="in" units="millimolar"/>
<variable name="Ko" public_interface="in" units="millimolar"/>
<variable name="Nai" public_interface="in" units="millimolar"/>
<variable name="Ki" public_interface="in" units="millimolar"/>
<variable name="d" private_interface="in" units="dimensionless"/>
<variable name="f" private_interface="in" units="dimensionless"/>
<variable name="f_Ca" private_interface="in" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>I_CaCa</ci>
<apply>
<divide/>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>P_Ca</ci>
<apply>
<power/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
<ci>V</ci>
<apply>
<power/>
<ci>F</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>gamma_Cai</ci>
<ci>Cai</ci>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<ci>gamma_Cao</ci>
<ci>Cao</ci>
</apply>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>I_CaNa</ci>
<apply>
<divide/>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>P_Na</ci>
<apply>
<power/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
<ci>V</ci>
<apply>
<power/>
<ci>F</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>gamma_Nai</ci>
<ci>Nai</ci>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<ci>gamma_Nao</ci>
<ci>Nao</ci>
</apply>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>I_CaK</ci>
<apply>
<divide/>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>P_K</ci>
<apply>
<power/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
<ci>V</ci>
<apply>
<power/>
<ci>F</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>gamma_Ki</ci>
<ci>Ki</ci>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<ci>gamma_Ko</ci>
<ci>Ko</ci>
</apply>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_CaCa</ci>
<apply>
<times/>
<ci>d</ci>
<ci>f</ci>
<ci>f_Ca</ci>
<ci>I_CaCa</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>i_CaNa</ci>
<apply>
<times/>
<ci>d</ci>
<ci>f</ci>
<ci>f_Ca</ci>
<ci>I_CaNa</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>i_CaK</ci>
<apply>
<times/>
<ci>d</ci>
<ci>f</ci>
<ci>f_Ca</ci>
<ci>I_CaK</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>i_Ca_L</ci>
<apply>
<plus/>
<ci>i_CaCa</ci>
<ci>i_CaK</ci>
<ci>i_CaNa</ci>
</apply>
</apply>
</math>
</component>
<component name="L_type_Ca_channel_d_gate">
<variable initial_value="3.538268e-6" name="d" public_interface="out" units="dimensionless"/>
<variable name="alpha_d" units="per_ms"/>
<variable name="beta_d" units="per_ms"/>
<variable name="d_infinity" units="dimensionless"/>
<variable name="tau_d" units="ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<variable name="E0_d" units="millivolt"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>E0_d</ci>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">10</cn>
</apply>
</apply>
<apply>
<eq/>
<ci>d_infinity</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>E0_d</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">6.24</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_d</ci>
<piecewise>
<piece>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt_ms">0.035</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">6.24</cn>
</apply>
</apply>
<apply>
<lt/>
<apply>
<abs/>
<ci>E0_d</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" type="e-notation" cellml:units="millivolt">1 <sep/>
-5</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<apply>
<times/>
<ci>d_infinity</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>E0_d</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">6.24</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt_ms">0.035</cn>
<ci>E0_d</ci>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>alpha_d</ci>
<apply>
<divide/>
<ci>d_infinity</ci>
<ci>tau_d</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>beta_d</ci>
<apply>
<divide/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>d_infinity</ci>
</apply>
<ci>tau_d</ci>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>d</ci>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>alpha_d</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>d</ci>
</apply>
</apply>
<apply>
<times/>
<ci>beta_d</ci>
<ci>d</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="L_type_Ca_channel_f_gate">
<variable initial_value="0.995259" name="f" public_interface="out" units="dimensionless"/>
<variable name="alpha_f" units="per_ms"/>
<variable name="beta_f" units="per_ms"/>
<variable name="f_infinity" units="dimensionless"/>
<variable name="tau_f" units="ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>f_infinity</ci>
<apply>
<plus/>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">32</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">8</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.6</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">50</cn>
<ci>V</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">20</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_f</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">1</cn>
<apply>
<plus/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.0197</cn>
<apply>
<exp/>
<apply>
<minus/>
<apply>
<power/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.0337</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">10</cn>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.02</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>alpha_f</ci>
<apply>
<divide/>
<ci>f_infinity</ci>
<ci>tau_f</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>beta_f</ci>
<apply>
<divide/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>f_infinity</ci>
</apply>
<ci>tau_f</ci>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>f</ci>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>alpha_f</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>f</ci>
</apply>
</apply>
<apply>
<times/>
<ci>beta_f</ci>
<ci>f</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="L_type_Ca_channel_f_Ca_gate">
<variable name="f_Ca" public_interface="out" units="dimensionless"/>
<variable initial_value="0.0006" name="Km_Ca" units="millimolar"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="Cai" public_interface="in" units="millimolar"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>f_Ca</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<divide/>
<ci>Cai</ci>
<ci>Km_Ca</ci>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="T_type_Ca_channel">
<variable cmeta:id="T_type_Ca_channel_i_Ca_T" name="i_Ca_T" public_interface="out" units="microA_per_microF"/>
<variable initial_value="0.05" name="g_CaT" units="milliS_per_microF"/>
<variable name="E_Ca" public_interface="in" units="millivolt"/>
<variable name="time" private_interface="out" public_interface="in" units="ms"/>
<variable name="V" private_interface="out" public_interface="in" units="millivolt"/>
<variable name="b" private_interface="in" units="dimensionless"/>
<variable name="g" private_interface="in" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>i_Ca_T</ci>
<apply>
<times/>
<ci>g_CaT</ci>
<ci>b</ci>
<ci>b</ci>
<ci>g</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Ca</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="T_type_Ca_channel_b_gate">
<variable initial_value="0.0010301" name="b" public_interface="out" units="dimensionless"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<variable name="b_inf" units="dimensionless"/>
<variable name="tau_b" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>b_inf</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">14</cn>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">10.8</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_b</ci>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">3.7</cn>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">6.1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">25</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">4.5</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>b</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>b_inf</ci>
<ci>b</ci>
</apply>
<ci>tau_b</ci>
</apply>
</apply>
</math>
</component>
<component name="T_type_Ca_channel_g_gate">
<variable initial_value="0.9341828" name="g" public_interface="out" units="dimensionless"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<variable name="g_inf" units="dimensionless"/>
<variable name="tau_g" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_inf</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">60</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">5.6</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_g</ci>
<piecewise>
<piece>
<apply>
<plus/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms_per_millivolt">0.875</cn>
</apply>
<ci>V</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">12</cn>
</apply>
<apply>
<leq/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">0</cn>
</apply>
</piece>
<otherwise>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">12</cn>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>g</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>g_inf</ci>
<ci>g</ci>
</apply>
<ci>tau_g</ci>
</apply>
</apply>
</math>
</component>
<component name="rapid_delayed_rectifier_potassium_current">
<variable cmeta:id="rapid_delayed_rectifier_potassium_current_i_Kr" name="i_Kr" public_interface="out" units="microA_per_microF"/>
<variable name="g_Kr" units="milliS_per_microF"/>
<variable name="Rect" units="dimensionless"/>
<variable name="E_K" public_interface="in" units="millivolt"/>
<variable name="time" private_interface="out" public_interface="in" units="ms"/>
<variable name="V" private_interface="out" public_interface="in" units="millivolt"/>
<variable name="Ko" public_interface="in" units="millimolar"/>
<variable name="xr" private_interface="in" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_Kr</ci>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="milliS_per_microF">0.02614</cn>
<apply>
<root/>
<apply>
<divide/>
<ci>Ko</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millimolar">5.4</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Rect</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">9</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">22.4</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_Kr</ci>
<apply>
<times/>
<ci>g_Kr</ci>
<ci>xr</ci>
<ci>Rect</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="rapid_delayed_rectifier_potassium_current_xr_gate">
<variable initial_value="0.0007500578" name="xr" public_interface="out" units="dimensionless"/>
<variable name="xr_infinity" units="dimensionless"/>
<variable name="tau_xr" units="ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>xr_infinity</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">21.5</cn>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">7.5</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_xr</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">1</cn>
<apply>
<plus/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.00138</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">14.2</cn>
</apply>
</apply>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.123</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">14.2</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.00061</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">38.9</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.145</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">38.9</cn>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>xr</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>xr_infinity</ci>
<ci>xr</ci>
</apply>
<ci>tau_xr</ci>
</apply>
</apply>
</math>
</component>
<component name="slow_delayed_rectifier_potassium_current">
<variable cmeta:id="slow_delayed_rectifier_potassium_current_i_Ks" name="i_Ks" public_interface="out" units="microA_per_microF"/>
<variable name="g_Ks" units="milliS_per_microF"/>
<variable name="E_Ks" units="millivolt"/>
<variable initial_value="0.01833" name="PNaK" units="dimensionless"/>
<variable name="time" private_interface="out" public_interface="in" units="ms"/>
<variable name="V" private_interface="out" public_interface="in" units="millivolt"/>
<variable name="R" public_interface="in" units="joule_per_kilomole_kelvin"/>
<variable name="T" public_interface="in" units="kelvin"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="Ko" public_interface="in" units="millimolar"/>
<variable name="Ki" public_interface="in" units="millimolar"/>
<variable name="Nao" public_interface="in" units="millimolar"/>
<variable name="Nai" public_interface="in" units="millimolar"/>
<variable name="Cai" public_interface="in" units="millimolar"/>
<variable name="xs1" private_interface="in" units="dimensionless"/>
<variable name="xs2" private_interface="in" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>E_Ks</ci>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
<ci>F</ci>
</apply>
<apply>
<ln/>
<apply>
<divide/>
<apply>
<plus/>
<ci>Ko</ci>
<apply>
<times/>
<ci>PNaK</ci>
<ci>Nao</ci>
</apply>
</apply>
<apply>
<plus/>
<ci>Ki</ci>
<apply>
<times/>
<ci>PNaK</ci>
<ci>Nai</ci>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>g_Ks</ci>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="milliS_per_microF">0.433</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.6</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<power/>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" type="e-notation" cellml:units="millimolar">3.8 <sep/>
-5</cn>
<ci>Cai</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1.4</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_Ks</ci>
<apply>
<times/>
<ci>g_Ks</ci>
<ci>xs1</ci>
<ci>xs2</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Ks</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="slow_delayed_rectifier_potassium_current_xs1_gate">
<variable initial_value="0.0421517" name="xs1" public_interface="out" units="dimensionless"/>
<variable name="xs1_infinity" units="dimensionless"/>
<variable name="tau_xs1" units="ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>xs1_infinity</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">1.5</cn>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">16.7</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_xs1</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">1</cn>
<apply>
<plus/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" type="e-notation" cellml:units="per_millivolt">7.19 <sep/>
-5</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">30</cn>
</apply>
</apply>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.148</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">30</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.000131</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">30</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.0687</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">30</cn>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>xs1</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>xs1_infinity</ci>
<ci>xs1</ci>
</apply>
<ci>tau_xs1</ci>
</apply>
</apply>
</math>
</component>
<component name="slow_delayed_rectifier_potassium_current_xs2_gate">
<variable initial_value="0.08866" name="xs2" public_interface="out" units="dimensionless"/>
<variable name="xs2_infinity" units="dimensionless"/>
<variable name="tau_xs2" units="ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>xs2_infinity</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">1.5</cn>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">16.7</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_xs2</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="ms">4</cn>
<apply>
<plus/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" type="e-notation" cellml:units="per_millivolt">7.19 <sep/>
-5</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">30</cn>
</apply>
</apply>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.148</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">30</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.000131</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">30</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.0687</cn>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">30</cn>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>xs2</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>xs2_infinity</ci>
<ci>xs2</ci>
</apply>
<ci>tau_xs2</ci>
</apply>
</apply>
</math>
</component>
<component name="time_independent_potassium_current">
<variable cmeta:id="time_independent_potassium_current_i_K1" name="i_K1" public_interface="out" units="microA_per_microF"/>
<variable name="E_K" private_interface="out" public_interface="out" units="millivolt"/>
<variable name="g_K1" units="milliS_per_microF"/>
<variable name="V" private_interface="out" public_interface="in" units="millivolt"/>
<variable name="Ko" public_interface="in" units="millimolar"/>
<variable name="Ki" public_interface="in" units="millimolar"/>
<variable name="R" public_interface="in" units="joule_per_kilomole_kelvin"/>
<variable name="T" public_interface="in" units="kelvin"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="K1_infinity" private_interface="in" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_K1</ci>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="milliS_per_microF">0.75</cn>
<apply>
<root/>
<apply>
<divide/>
<ci>Ko</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millimolar">5.4</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>E_K</ci>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
<ci>F</ci>
</apply>
<apply>
<ln/>
<apply>
<divide/>
<ci>Ko</ci>
<ci>Ki</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_K1</ci>
<apply>
<times/>
<ci>g_K1</ci>
<ci>K1_infinity</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="time_independent_potassium_current_K1_gate">
<variable name="K1_infinity" public_interface="out" units="dimensionless"/>
<variable name="alpha_K1" units="per_ms"/>
<variable name="beta_K1" units="per_ms"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="E_K" public_interface="in" units="millivolt"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>alpha_K1</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">1.02</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.2385</cn>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">59.215</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>beta_K1</ci>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">1</cn>
<apply>
<plus/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.49124</cn>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.08032</cn>
<apply>
<plus/>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">5.476</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<exp/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.06175</cn>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">594.31</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_millivolt">0.5143</cn>
</apply>
<apply>
<plus/>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">4.753</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>K1_infinity</ci>
<apply>
<divide/>
<ci>alpha_K1</ci>
<apply>
<plus/>
<ci>alpha_K1</ci>
<ci>beta_K1</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="plateau_potassium_current">
<variable cmeta:id="plateau_potassium_current_i_Kp" name="i_Kp" public_interface="out" units="microA_per_microF"/>
<variable initial_value="0.00552" name="g_Kp" units="milliS_per_microF"/>
<variable name="Kp" units="dimensionless"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="E_K" public_interface="in" units="millivolt"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>Kp</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">7.488</cn>
<ci>V</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">5.98</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_Kp</ci>
<apply>
<times/>
<ci>g_Kp</ci>
<ci>Kp</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="ATP_sensitive_potassium_current">
<variable cmeta:id="ATP_sensitive_potassium_current_i_K_ATP" name="i_K_ATP" public_interface="out" units="microA_per_microF"/>
<variable name="g_K_ATP" units="milliS_per_microF"/>
<variable initial_value="0.24" name="nATP" units="dimensionless"/>
<variable initial_value="5e-5" name="nicholsarea" units="dimensionless"/>
<variable initial_value="3" name="ATPi" units="millimolar"/>
<variable initial_value="2" name="hATP" units="dimensionless"/>
<variable initial_value="0.00025" name="kATP" units="millimolar"/>
<variable name="pATP" units="dimensionless"/>
<variable name="GKbaraATP" units="milliS_per_microF"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="Ko" public_interface="in" units="millimolar"/>
<variable name="E_K" public_interface="in" units="millivolt"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_K_ATP</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="milliS_per_microF">0.000193</cn>
<ci>nicholsarea</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>pATP</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<power/>
<apply>
<divide/>
<ci>ATPi</ci>
<ci>kATP</ci>
</apply>
<ci>hATP</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>GKbaraATP</ci>
<apply>
<times/>
<ci>g_K_ATP</ci>
<ci>pATP</ci>
<apply>
<power/>
<apply>
<divide/>
<ci>Ko</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millimolar">4</cn>
</apply>
<ci>nATP</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_K_ATP</ci>
<apply>
<times/>
<ci>GKbaraATP</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="transient_outward_current">
<variable name="i_to" public_interface="out" units="microA_per_microF"/>
<variable name="g_to" units="milliS_per_microF"/>
<variable name="E_K" public_interface="in" units="millivolt"/>
<variable name="V" private_interface="out" public_interface="in" units="millivolt"/>
<variable name="time" private_interface="out" public_interface="in" units="ms"/>
<variable name="rvdv" units="dimensionless"/>
<variable name="zdv" private_interface="in" units="dimensionless"/>
<variable name="ydv" private_interface="in" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_to</ci>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="milliS_per_microF">0.5</cn>
</apply>
</apply>
<apply>
<eq/>
<ci>rvdv</ci>
<apply>
<exp/>
<apply>
<divide/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">100</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_to</ci>
<apply>
<times/>
<ci>g_to</ci>
<apply>
<power/>
<ci>zdv</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">3</cn>
</apply>
<ci>ydv</ci>
<ci>rvdv</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="transient_outward_current_zdv_gate">
<variable initial_value="0.01198974" name="zdv" public_interface="out" units="dimensionless"/>
<variable name="alpha_zdv" units="per_ms"/>
<variable name="beta_zdv" units="per_ms"/>
<variable name="tau_zdv" units="ms"/>
<variable name="zdv_ss" units="dimensionless"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>alpha_zdv</ci>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">10</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">40</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">25</cn>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">40</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">25</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>beta_zdv</ci>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">10</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">90</cn>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">25</cn>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">90</cn>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">25</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_zdv</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<ci>alpha_zdv</ci>
<ci>beta_zdv</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>zdv_ss</ci>
<apply>
<divide/>
<ci>alpha_zdv</ci>
<apply>
<plus/>
<ci>alpha_zdv</ci>
<ci>beta_zdv</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>zdv</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>zdv_ss</ci>
<ci>zdv</ci>
</apply>
<ci>tau_zdv</ci>
</apply>
</apply>
</math>
</component>
<component name="transient_outward_current_ydv_gate">
<variable initial_value="0.97497" name="ydv" public_interface="out" units="dimensionless"/>
<variable name="alpha_ydv" units="per_ms"/>
<variable name="beta_ydv" units="per_ms"/>
<variable name="tau_ydv" units="ms"/>
<variable name="ydv_ss" units="dimensionless"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="time" public_interface="in" units="ms"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>alpha_ydv</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.015</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">60</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">5</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>beta_ydv</ci>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">25</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">5</cn>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">25</cn>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt">5</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_ydv</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<ci>alpha_ydv</ci>
<ci>beta_ydv</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>ydv_ss</ci>
<apply>
<divide/>
<ci>alpha_ydv</ci>
<apply>
<plus/>
<ci>alpha_ydv</ci>
<ci>beta_ydv</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>ydv</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>ydv_ss</ci>
<ci>ydv</ci>
</apply>
<ci>tau_ydv</ci>
</apply>
</apply>
</math>
</component>
<component name="sarcolemmal_calcium_pump">
<variable cmeta:id="sarcolemmal_calcium_pump_i_p_Ca" name="i_p_Ca" public_interface="out" units="microA_per_microF"/>
<variable initial_value="0.0005" name="K_mpCa" units="millimolar"/>
<variable initial_value="1.15" name="I_pCa" units="microA_per_microF"/>
<variable name="Cai" public_interface="in" units="millimolar"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>i_p_Ca</ci>
<apply>
<divide/>
<apply>
<times/>
<ci>I_pCa</ci>
<ci>Cai</ci>
</apply>
<apply>
<plus/>
<ci>K_mpCa</ci>
<ci>Cai</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="sodium_background_current">
<variable cmeta:id="sodium_background_current_i_Na_b" name="i_Na_b" public_interface="out" units="microA_per_microF"/>
<variable initial_value="0.004" name="g_Nab" units="milliS_per_microF"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="E_Na" public_interface="in" units="millivolt"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>i_Na_b</ci>
<apply>
<times/>
<ci>g_Nab</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Na</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="calcium_background_current">
<variable cmeta:id="calcium_background_current_i_Ca_b" name="i_Ca_b" public_interface="out" units="microA_per_microF"/>
<variable initial_value="0.003016" name="g_Cab" units="milliS_per_microF"/>
<variable name="E_Ca" public_interface="out" units="millivolt"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="R" public_interface="in" units="joule_per_kilomole_kelvin"/>
<variable name="T" public_interface="in" units="kelvin"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="Cai" public_interface="in" units="millimolar"/>
<variable name="Cao" public_interface="in" units="millimolar"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>E_Ca</ci>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
<ci>F</ci>
</apply>
</apply>
<apply>
<ln/>
<apply>
<divide/>
<ci>Cao</ci>
<ci>Cai</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_Ca_b</ci>
<apply>
<times/>
<ci>g_Cab</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Ca</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="sodium_potassium_pump">
<variable cmeta:id="sodium_potassium_pump_i_NaK" name="i_NaK" public_interface="out" units="microA_per_microF"/>
<variable initial_value="2" name="I_NaK" units="microA_per_microF"/>
<variable name="f_NaK" units="dimensionless"/>
<variable initial_value="10" name="K_mNai" units="millimolar"/>
<variable initial_value="1.5" name="K_mKo" units="millimolar"/>
<variable name="sigma" units="dimensionless"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="R" public_interface="in" units="joule_per_kilomole_kelvin"/>
<variable name="T" public_interface="in" units="kelvin"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="Nai" public_interface="in" units="millimolar"/>
<variable name="Nao" public_interface="in" units="millimolar"/>
<variable name="Ko" public_interface="in" units="millimolar"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>sigma</ci>
<apply>
<times/>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">7</cn>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<ci>Nao</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millimolar">67.3</cn>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>f_NaK</ci>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.1245</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.1</cn>
</apply>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.0365</cn>
<ci>sigma</ci>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<ci>V</ci>
</apply>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_NaK</ci>
<apply>
<divide/>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>I_NaK</ci>
<ci>f_NaK</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<power/>
<apply>
<divide/>
<ci>K_mNai</ci>
<ci>Nai</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
</apply>
<ci>Ko</ci>
</apply>
<apply>
<plus/>
<ci>Ko</ci>
<ci>K_mKo</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="non_specific_calcium_activated_current">
<variable name="i_ns_Ca" public_interface="out" units="microA_per_microF"/>
<variable cmeta:id="non_specific_calcium_activated_current_i_ns_Na" name="i_ns_Na" public_interface="out" units="microA_per_microF"/>
<variable name="i_ns_K" public_interface="out" units="microA_per_microF"/>
<variable name="P_ns_Ca" units="litre_per_farad_ms"/>
<variable name="gamma_Nai" public_interface="in" units="dimensionless"/>
<variable name="gamma_Nao" public_interface="in" units="dimensionless"/>
<variable name="gamma_Ki" public_interface="in" units="dimensionless"/>
<variable name="gamma_Ko" public_interface="in" units="dimensionless"/>
<variable name="R" public_interface="in" units="joule_per_kilomole_kelvin"/>
<variable name="T" public_interface="in" units="kelvin"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="Cao" public_interface="in" units="millimolar"/>
<variable name="Nao" public_interface="in" units="millimolar"/>
<variable name="Ko" public_interface="in" units="millimolar"/>
<variable name="Nai" public_interface="in" units="millimolar"/>
<variable name="Ki" public_interface="in" units="millimolar"/>
<variable name="I_ns_Na" units="microA_per_microF"/>
<variable name="I_ns_K" units="microA_per_microF"/>
<variable initial_value="0.0012" name="K_m_ns_Ca" units="millimolar"/>
<variable name="time" public_interface="in" units="ms"/>
<variable name="Cai" public_interface="in" units="millimolar"/>
<variable name="V" public_interface="in" units="millivolt"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>P_ns_Ca</ci>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" type="e-notation" cellml:units="litre_per_farad_ms">1.75 <sep/>
-7</cn>
</apply>
</apply>
<apply>
<eq/>
<ci>I_ns_Na</ci>
<apply>
<divide/>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>P_ns_Ca</ci>
<apply>
<power/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
<ci>V</ci>
<apply>
<power/>
<ci>F</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>gamma_Nai</ci>
<ci>Nai</ci>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<ci>gamma_Nao</ci>
<ci>Nao</ci>
</apply>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>I_ns_K</ci>
<apply>
<divide/>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>P_ns_Ca</ci>
<apply>
<power/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
<ci>V</ci>
<apply>
<power/>
<ci>F</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>gamma_Ki</ci>
<ci>Ki</ci>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<ci>gamma_Ko</ci>
<ci>Ko</ci>
</apply>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_ns_Na</ci>
<apply>
<divide/>
<apply>
<times/>
<ci>I_ns_Na</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<power/>
<apply>
<divide/>
<ci>K_m_ns_Ca</ci>
<ci>Cai</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">3</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_ns_K</ci>
<apply>
<divide/>
<apply>
<times/>
<ci>I_ns_K</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<power/>
<apply>
<divide/>
<ci>K_m_ns_Ca</ci>
<ci>Cai</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">3</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_ns_Ca</ci>
<apply>
<plus/>
<ci>i_ns_Na</ci>
<ci>i_ns_K</ci>
</apply>
</apply>
</math>
</component>
<component name="Na_Ca_exchanger">
<variable cmeta:id="Na_Ca_exchanger_i_NaCa" name="i_NaCa" public_interface="out" units="microA_per_microF"/>
<variable name="V" public_interface="in" units="millivolt"/>
<variable name="R" public_interface="in" units="joule_per_kilomole_kelvin"/>
<variable name="T" public_interface="in" units="kelvin"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="Nai" public_interface="in" units="millimolar"/>
<variable name="Nao" public_interface="in" units="millimolar"/>
<variable name="Cai" public_interface="in" units="millimolar"/>
<variable name="Cao" public_interface="in" units="millimolar"/>
<variable initial_value="3" name="n_NaCa" public_interface="out" units="dimensionless"/>
<variable initial_value="0.002" name="K_NaCa" units="microA_per_microF"/>
<variable initial_value="0.001" name="d_NaCa" units="dimensionless"/>
<variable initial_value="0.5" name="gamma" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>i_NaCa</ci>
<apply>
<divide/>
<apply>
<times/>
<ci>K_NaCa</ci>
<apply>
<minus/>
<apply>
<times/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<ci>gamma</ci>
<apply>
<minus/>
<ci>n_NaCa</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
<apply>
<power/>
<ci>Nai</ci>
<ci>n_NaCa</ci>
</apply>
<ci>Cao</ci>
</apply>
<apply>
<times/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<ci>gamma</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
</apply>
<apply>
<minus/>
<ci>n_NaCa</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
<ci>V</ci>
<ci>F</ci>
</apply>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
</apply>
</apply>
<apply>
<power/>
<ci>Nao</ci>
<ci>n_NaCa</ci>
</apply>
<ci>Cai</ci>
</apply>
</apply>
</apply>
<apply>
<times/>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mM4">1</cn>
<apply>
<times/>
<ci>d_NaCa</ci>
<apply>
<plus/>
<apply>
<times/>
<ci>Cai</ci>
<apply>
<power/>
<ci>Nao</ci>
<ci>n_NaCa</ci>
</apply>
</apply>
<apply>
<times/>
<ci>Cao</ci>
<apply>
<power/>
<ci>Nai</ci>
<ci>n_NaCa</ci>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<divide/>
<ci>Cai</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millimolar">0.0069</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="calcium_dynamics">
<variable cmeta:id="calcium_dynamics_i_rel" name="i_rel" public_interface="out" units="millimolar_per_ms"/>
<variable cmeta:id="calcium_dynamics_i_up" name="i_up" public_interface="out" units="millimolar_per_ms"/>
<variable cmeta:id="calcium_dynamics_i_leak" name="i_leak" public_interface="out" units="millimolar_per_ms"/>
<variable cmeta:id="calcium_dynamics_i_tr" name="i_tr" public_interface="out" units="millimolar_per_ms"/>
<variable name="G_rel" units="per_ms"/>
<variable initial_value="60000" name="G_rel_max" units="per_ms"/>
<variable initial_value="4000" name="G_rel_overload" units="per_ms"/>
<variable initial_value="0.18" name="tau_tr" units="ms"/>
<variable initial_value="0.0008" name="K_mrel" units="millimolar"/>
<variable initial_value="0.00018" name="delta_Ca_ith" units="millimolar"/>
<variable initial_value="10" name="CSQN_max" units="millimolar"/>
<variable initial_value="0.8" name="K_mCSQN" units="millimolar"/>
<variable initial_value="0.00092" name="K_mup" units="millimolar"/>
<variable name="K_leak" units="per_ms"/>
<variable initial_value="5" name="I_up" units="millimolar_per_ms"/>
<variable initial_value="15" name="Ca_NSR_max" units="millimolar"/>
<variable name="time" public_interface="in" units="ms"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable initial_value="0.00034209" name="Cai" public_interface="out" units="millimolar"/>
<variable initial_value="1.8" name="Cao" public_interface="out" units="millimolar"/>
<variable initial_value="0.8204291" name="Ca_JSR" public_interface="out" units="millimolar"/>
<variable initial_value="2.7872629" name="Ca_NSR" public_interface="out" units="millimolar"/>
<variable name="V_myo" public_interface="in" units="micro_litre"/>
<variable name="A_cap" public_interface="in" units="cm2"/>
<variable name="V_JSR" units="micro_litre"/>
<variable name="V_NSR" units="micro_litre"/>
<variable name="i_NaCa" public_interface="in" units="microA_per_microF"/>
<variable name="i_CaCa" public_interface="in" units="microA_per_microF"/>
<variable name="i_p_Ca" public_interface="in" units="microA_per_microF"/>
<variable name="i_Ca_b" public_interface="in" units="microA_per_microF"/>
<variable name="i_Ca_T" public_interface="in" units="microA_per_microF"/>
<variable initial_value="0.0005" name="K_mTn" units="millimolar"/>
<variable initial_value="0.00238" name="K_mCMDN" units="millimolar"/>
<variable initial_value="0.07" name="Tn_max" units="millimolar"/>
<variable initial_value="0.05" name="CMDN_max" units="millimolar"/>
<variable name="dVdt" public_interface="in" units="millivolt_per_ms"/>
<variable initial_value="3.7458e-87" name="APtrack" units="dimensionless"/>
<variable initial_value="2.07066e-86" name="APtrack2" units="dimensionless"/>
<variable initial_value="0.01924195" name="APtrack3" units="dimensionless"/>
<variable initial_value="1.660129e-87" name="Cainfluxtrack" units="millimolar"/>
<variable initial_value="1.97626e-323" name="OVRLDtrack" units="dimensionless"/>
<variable initial_value="-2.470328e-323" name="OVRLDtrack2" units="dimensionless"/>
<variable initial_value="2.2645e-282" name="OVRLDtrack3" units="dimensionless"/>
<variable initial_value="0.7" name="CSQNthresh" units="dimensionless"/>
<variable initial_value="0.98" name="Logicthresh" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>V_JSR</ci>
<apply>
<times/>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.0048</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.68</cn>
</apply>
<ci>V_myo</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>V_NSR</ci>
<apply>
<times/>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.0552</cn>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.68</cn>
</apply>
<ci>V_myo</ci>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>APtrack</ci>
</apply>
<piecewise>
<piece>
<apply>
<minus/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">100</cn>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>APtrack</ci>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.5</cn>
<ci>APtrack</ci>
</apply>
</apply>
<apply>
<gt/>
<ci>dVdt</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millivolt_per_ms">150</cn>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.5</cn>
</apply>
<ci>APtrack</ci>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>APtrack2</ci>
</apply>
<piecewise>
<piece>
<apply>
<minus/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">100</cn>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>APtrack2</ci>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.5</cn>
<ci>APtrack2</ci>
</apply>
</apply>
<apply>
<and/>
<apply>
<lt/>
<ci>APtrack</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.2</cn>
</apply>
<apply>
<gt/>
<ci>APtrack</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.18</cn>
</apply>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.5</cn>
</apply>
<ci>APtrack2</ci>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>APtrack3</ci>
</apply>
<piecewise>
<piece>
<apply>
<minus/>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">100</cn>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>APtrack3</ci>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.5</cn>
<ci>APtrack3</ci>
</apply>
</apply>
<apply>
<and/>
<apply>
<lt/>
<ci>APtrack</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.2</cn>
</apply>
<apply>
<gt/>
<ci>APtrack</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.18</cn>
</apply>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.01</cn>
</apply>
<ci>APtrack3</ci>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>Cainfluxtrack</ci>
</apply>
<piecewise>
<piece>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="microF_per_cm2">1</cn>
</apply>
<ci>A_cap</ci>
<apply>
<plus/>
<apply>
<minus/>
<apply>
<plus/>
<ci>i_CaCa</ci>
<ci>i_Ca_T</ci>
</apply>
<ci>i_NaCa</ci>
</apply>
<ci>i_p_Ca</ci>
<ci>i_Ca_b</ci>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
<ci>V_myo</ci>
<ci>F</ci>
</apply>
</apply>
<apply>
<gt/>
<ci>APtrack</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.2</cn>
</apply>
</piece>
<piece>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="millimolar_per_ms">0</cn>
<apply>
<and/>
<apply>
<gt/>
<ci>APtrack2</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.01</cn>
</apply>
<apply>
<leq/>
<ci>APtrack</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.2</cn>
</apply>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.5</cn>
</apply>
<ci>Cainfluxtrack</ci>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>OVRLDtrack</ci>
</apply>
<piecewise>
<piece>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">50</cn>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>OVRLDtrack</ci>
</apply>
</apply>
<apply>
<and/>
<apply>
<gt/>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<divide/>
<ci>K_mCSQN</ci>
<ci>Ca_JSR</ci>
</apply>
</apply>
</apply>
<ci>CSQNthresh</ci>
</apply>
<apply>
<lt/>
<ci>OVRLDtrack3</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.37</cn>
</apply>
<apply>
<lt/>
<ci>APtrack3</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.37</cn>
</apply>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.5</cn>
</apply>
<ci>OVRLDtrack</ci>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>OVRLDtrack2</ci>
</apply>
<piecewise>
<piece>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">50</cn>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>OVRLDtrack2</ci>
</apply>
</apply>
<apply>
<and/>
<apply>
<gt/>
<ci>OVRLDtrack</ci>
<ci>Logicthresh</ci>
</apply>
<apply>
<lt/>
<ci>OVRLDtrack2</ci>
<ci>Logicthresh</ci>
</apply>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.5</cn>
</apply>
<ci>OVRLDtrack2</ci>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>OVRLDtrack3</ci>
</apply>
<piecewise>
<piece>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">50</cn>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>OVRLDtrack3</ci>
</apply>
</apply>
<apply>
<and/>
<apply>
<gt/>
<ci>OVRLDtrack</ci>
<ci>Logicthresh</ci>
</apply>
<apply>
<lt/>
<ci>OVRLDtrack3</ci>
<ci>Logicthresh</ci>
</apply>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0.01</cn>
</apply>
<ci>OVRLDtrack3</ci>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>G_rel</ci>
<piecewise>
<piece>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>G_rel_max</ci>
<apply>
<minus/>
<ci>Cainfluxtrack</ci>
<ci>delta_Ca_ith</ci>
</apply>
</apply>
<apply>
<minus/>
<apply>
<plus/>
<ci>K_mrel</ci>
<ci>Cainfluxtrack</ci>
</apply>
<ci>delta_Ca_ith</ci>
</apply>
</apply>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>APtrack2</ci>
</apply>
<ci>APtrack2</ci>
</apply>
<apply>
<gt/>
<ci>Cainfluxtrack</ci>
<ci>delta_Ca_ith</ci>
</apply>
</piece>
<piece>
<apply>
<times/>
<ci>G_rel_overload</ci>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<ci>OVRLDtrack2</ci>
</apply>
<ci>OVRLDtrack2</ci>
</apply>
<apply>
<and/>
<apply>
<leq/>
<ci>Cainfluxtrack</ci>
<ci>delta_Ca_ith</ci>
</apply>
<apply>
<gt/>
<ci>OVRLDtrack2</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0</cn>
</apply>
</apply>
</piece>
<otherwise>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms">0</cn>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_rel</ci>
<apply>
<times/>
<ci>G_rel</ci>
<apply>
<minus/>
<ci>Ca_JSR</ci>
<ci>Cai</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_up</ci>
<apply>
<divide/>
<apply>
<times/>
<ci>I_up</ci>
<ci>Cai</ci>
</apply>
<apply>
<plus/>
<ci>Cai</ci>
<ci>K_mup</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>K_leak</ci>
<apply>
<divide/>
<ci>I_up</ci>
<ci>Ca_NSR_max</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>i_leak</ci>
<apply>
<times/>
<ci>K_leak</ci>
<ci>Ca_NSR</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>i_tr</ci>
<apply>
<divide/>
<apply>
<minus/>
<ci>Ca_NSR</ci>
<ci>Ca_JSR</ci>
</apply>
<ci>tau_tr</ci>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>Ca_JSR</ci>
</apply>
<apply>
<times/>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.001</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<divide/>
<apply>
<times/>
<ci>CSQN_max</ci>
<ci>K_mCSQN</ci>
</apply>
<apply>
<power/>
<apply>
<plus/>
<ci>K_mCSQN</ci>
<ci>Ca_JSR</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<minus/>
<ci>i_tr</ci>
<ci>i_rel</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>Ca_NSR</ci>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.001</cn>
<apply>
<plus/>
<apply>
<minus/>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<ci>i_tr</ci>
</apply>
<ci>V_JSR</ci>
</apply>
<ci>V_NSR</ci>
</apply>
<ci>i_leak</ci>
</apply>
<ci>i_up</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>Cai</ci>
</apply>
<apply>
<times/>
<apply>
<divide/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.001</cn>
<apply>
<plus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">1</cn>
<apply>
<divide/>
<apply>
<times/>
<ci>CMDN_max</ci>
<ci>K_mCMDN</ci>
</apply>
<apply>
<power/>
<apply>
<plus/>
<ci>K_mCMDN</ci>
<ci>Cai</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
<apply>
<divide/>
<apply>
<times/>
<ci>Tn_max</ci>
<ci>K_mTn</ci>
</apply>
<apply>
<power/>
<apply>
<plus/>
<ci>K_mTn</ci>
<ci>Cai</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="microF_per_cm2">1</cn>
</apply>
<ci>A_cap</ci>
<apply>
<plus/>
<apply>
<minus/>
<apply>
<plus/>
<ci>i_CaCa</ci>
<ci>i_Ca_T</ci>
</apply>
<ci>i_NaCa</ci>
</apply>
<ci>i_p_Ca</ci>
<ci>i_Ca_b</ci>
</apply>
</apply>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
<ci>V_myo</ci>
<ci>F</ci>
</apply>
</apply>
<apply>
<divide/>
<apply>
<times/>
<ci>i_rel</ci>
<ci>V_JSR</ci>
</apply>
<ci>V_myo</ci>
</apply>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<ci>i_leak</ci>
<ci>i_up</ci>
</apply>
<ci>V_NSR</ci>
</apply>
<ci>V_myo</ci>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="ionic_concentrations">
<variable initial_value="14.177596" name="Nai" public_interface="out" units="millimolar"/>
<variable initial_value="132" name="Nao" public_interface="out" units="millimolar"/>
<variable initial_value="138.37949" name="Ki" public_interface="out" units="millimolar"/>
<variable initial_value="4.5" name="Ko" public_interface="out" units="millimolar"/>
<variable initial_value="1.434e-7" name="A_cap" public_interface="out" units="cm2"/>
<variable initial_value="0.001" name="preplength" units="mm"/>
<variable initial_value="1.1e-4" name="radius" units="mm"/>
<variable name="volume" units="micro_litre"/>
<variable name="V_myo" public_interface="out" units="micro_litre"/>
<variable name="time" public_interface="in" units="ms"/>
<variable name="F" public_interface="in" units="coulomb_per_mole"/>
<variable name="i_Na" public_interface="in" units="microA_per_microF"/>
<variable name="i_CaNa" public_interface="in" units="microA_per_microF"/>
<variable name="i_Na_b" public_interface="in" units="microA_per_microF"/>
<variable name="i_ns_Na" public_interface="in" units="microA_per_microF"/>
<variable name="i_NaCa" public_interface="in" units="microA_per_microF"/>
<variable name="i_NaK" public_interface="in" units="microA_per_microF"/>
<variable name="i_CaK" public_interface="in" units="microA_per_microF"/>
<variable name="i_Kr" public_interface="in" units="microA_per_microF"/>
<variable name="i_Ks" public_interface="in" units="microA_per_microF"/>
<variable name="i_K1" public_interface="in" units="microA_per_microF"/>
<variable name="i_Kp" public_interface="in" units="microA_per_microF"/>
<variable name="i_K_ATP" public_interface="in" units="microA_per_microF"/>
<variable name="i_ns_K" public_interface="in" units="microA_per_microF"/>
<variable name="i_to" public_interface="in" units="microA_per_microF"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>volume</ci>
<apply>
<times/>
<pi/>
<ci>preplength</ci>
<apply>
<power/>
<ci>radius</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>V_myo</ci>
<apply>
<times/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">0.68</cn>
<ci>volume</ci>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>Nai</ci>
</apply>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="microF_per_cm2">0.001</cn>
</apply>
<apply>
<plus/>
<ci>i_Na</ci>
<ci>i_CaNa</ci>
<ci>i_Na_b</ci>
<ci>i_ns_Na</ci>
<apply>
<times/>
<ci>i_NaCa</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">3</cn>
</apply>
<apply>
<times/>
<ci>i_NaK</ci>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">3</cn>
</apply>
</apply>
<ci>A_cap</ci>
</apply>
<apply>
<times/>
<ci>V_myo</ci>
<ci>F</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>Ki</ci>
</apply>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="microF_per_cm2">0.001</cn>
</apply>
<apply>
<plus/>
<ci>i_CaK</ci>
<ci>i_Kr</ci>
<ci>i_Ks</ci>
<ci>i_K1</ci>
<ci>i_Kp</ci>
<ci>i_K_ATP</ci>
<ci>i_to</ci>
<ci>i_ns_K</ci>
<apply>
<times/>
<apply>
<minus/>
<ci>i_NaK</ci>
</apply>
<cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless">2</cn>
</apply>
</apply>
<ci>A_cap</ci>
</apply>
<apply>
<times/>
<ci>V_myo</ci>
<ci>F</ci>
</apply>
</apply>
</apply>
</math>
</component>
<group>
<relationship_ref relationship="containment"/>
<component_ref component="membrane">
<component_ref component="fast_sodium_current">
<component_ref component="fast_sodium_current_m_gate"/>
<component_ref component="fast_sodium_current_h_gate"/>
<component_ref component="fast_sodium_current_j_gate"/>
</component_ref>
<component_ref component="L_type_Ca_channel">
<component_ref component="L_type_Ca_channel_d_gate"/>
<component_ref component="L_type_Ca_channel_f_gate"/>
<component_ref component="L_type_Ca_channel_f_Ca_gate"/>
</component_ref>
<component_ref component="T_type_Ca_channel">
<component_ref component="T_type_Ca_channel_b_gate"/>
<component_ref component="T_type_Ca_channel_g_gate"/>
</component_ref>
<component_ref component="rapid_delayed_rectifier_potassium_current">
<component_ref component="rapid_delayed_rectifier_potassium_current_xr_gate"/>
</component_ref>
<component_ref component="slow_delayed_rectifier_potassium_current">
<component_ref component="slow_delayed_rectifier_potassium_current_xs1_gate"/>
<component_ref component="slow_delayed_rectifier_potassium_current_xs2_gate"/>
</component_ref>
<component_ref component="time_independent_potassium_current">
<component_ref component="time_independent_potassium_current_K1_gate"/>
</component_ref>
<component_ref component="transient_outward_current">
<component_ref component="transient_outward_current_zdv_gate"/>
<component_ref component="transient_outward_current_ydv_gate"/>
</component_ref>
<component_ref component="Na_Ca_exchanger"/>
<component_ref component="plateau_potassium_current"/>
<component_ref component="ATP_sensitive_potassium_current"/>
<component_ref component="sarcolemmal_calcium_pump"/>
<component_ref component="sodium_background_current"/>
<component_ref component="calcium_background_current"/>
<component_ref component="sodium_potassium_pump"/>
<component_ref component="non_specific_calcium_activated_current"/>
<component_ref component="ionic_concentrations"/>
<component_ref component="calcium_dynamics"/>
</component_ref>
</group>
<group>
<relationship_ref relationship="encapsulation"/>
<component_ref component="fast_sodium_current">
<component_ref component="fast_sodium_current_m_gate"/>
<component_ref component="fast_sodium_current_h_gate"/>
<component_ref component="fast_sodium_current_j_gate"/>
</component_ref>
<component_ref component="L_type_Ca_channel">
<component_ref component="L_type_Ca_channel_d_gate"/>
<component_ref component="L_type_Ca_channel_f_gate"/>
<component_ref component="L_type_Ca_channel_f_Ca_gate"/>
</component_ref>
<component_ref component="T_type_Ca_channel">
<component_ref component="T_type_Ca_channel_b_gate"/>
<component_ref component="T_type_Ca_channel_g_gate"/>
</component_ref>
<component_ref component="rapid_delayed_rectifier_potassium_current">
<component_ref component="rapid_delayed_rectifier_potassium_current_xr_gate"/>
</component_ref>
<component_ref component="slow_delayed_rectifier_potassium_current">
<component_ref component="slow_delayed_rectifier_potassium_current_xs1_gate"/>
<component_ref component="slow_delayed_rectifier_potassium_current_xs2_gate"/>
</component_ref>
<component_ref component="time_independent_potassium_current">
<component_ref component="time_independent_potassium_current_K1_gate"/>
</component_ref>
<component_ref component="transient_outward_current">
<component_ref component="transient_outward_current_zdv_gate"/>
<component_ref component="transient_outward_current_ydv_gate"/>
</component_ref>
</group>
<connection>
<map_components component_1="membrane" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="fast_sodium_current" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="L_type_Ca_channel" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="T_type_Ca_channel" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="rapid_delayed_rectifier_potassium_current" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="slow_delayed_rectifier_potassium_current" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="transient_outward_current" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="non_specific_calcium_activated_current" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="ionic_concentrations" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="calcium_dynamics" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="fast_sodium_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_Na" variable_2="i_Na"/>
<map_variables variable_1="R" variable_2="R"/>
<map_variables variable_1="T" variable_2="T"/>
<map_variables variable_1="F" variable_2="F"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="L_type_Ca_channel"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_Ca_L" variable_2="i_Ca_L"/>
<map_variables variable_1="R" variable_2="R"/>
<map_variables variable_1="T" variable_2="T"/>
<map_variables variable_1="F" variable_2="F"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="T_type_Ca_channel"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_Ca_T" variable_2="i_Ca_T"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="rapid_delayed_rectifier_potassium_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_Kr" variable_2="i_Kr"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="slow_delayed_rectifier_potassium_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_Ks" variable_2="i_Ks"/>
<map_variables variable_1="R" variable_2="R"/>
<map_variables variable_1="T" variable_2="T"/>
<map_variables variable_1="F" variable_2="F"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="ATP_sensitive_potassium_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_K_ATP" variable_2="i_K_ATP"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="transient_outward_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_to" variable_2="i_to"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="Na_Ca_exchanger"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_NaCa" variable_2="i_NaCa"/>
<map_variables variable_1="R" variable_2="R"/>
<map_variables variable_1="T" variable_2="T"/>
<map_variables variable_1="F" variable_2="F"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="time_independent_potassium_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_K1" variable_2="i_K1"/>
<map_variables variable_1="R" variable_2="R"/>
<map_variables variable_1="T" variable_2="T"/>
<map_variables variable_1="F" variable_2="F"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="plateau_potassium_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_Kp" variable_2="i_Kp"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="sarcolemmal_calcium_pump"/>
<map_variables variable_1="i_p_Ca" variable_2="i_p_Ca"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="sodium_background_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_Na_b" variable_2="i_Na_b"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="calcium_background_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_Ca_b" variable_2="i_Ca_b"/>
<map_variables variable_1="R" variable_2="R"/>
<map_variables variable_1="T" variable_2="T"/>
<map_variables variable_1="F" variable_2="F"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="sodium_potassium_pump"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_NaK" variable_2="i_NaK"/>
<map_variables variable_1="R" variable_2="R"/>
<map_variables variable_1="T" variable_2="T"/>
<map_variables variable_1="F" variable_2="F"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="non_specific_calcium_activated_current"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="R" variable_2="R"/>
<map_variables variable_1="T" variable_2="T"/>
<map_variables variable_1="F" variable_2="F"/>
<map_variables variable_1="i_ns_Ca" variable_2="i_ns_Ca"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="ionic_concentrations"/>
<map_variables variable_1="F" variable_2="F"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="calcium_dynamics"/>
<map_variables variable_1="F" variable_2="F"/>
<map_variables variable_1="dVdt" variable_2="dVdt"/>
</connection>
<connection>
<map_components component_1="fast_sodium_current" component_2="ionic_concentrations"/>
<map_variables variable_1="i_Na" variable_2="i_Na"/>
<map_variables variable_1="Nao" variable_2="Nao"/>
<map_variables variable_1="Nai" variable_2="Nai"/>
</connection>
<connection>
<map_components component_1="fast_sodium_current" component_2="sodium_background_current"/>
<map_variables variable_1="E_Na" variable_2="E_Na"/>
</connection>
<connection>
<map_components component_1="L_type_Ca_channel" component_2="ionic_concentrations"/>
<map_variables variable_1="Nao" variable_2="Nao"/>
<map_variables variable_1="Nai" variable_2="Nai"/>
<map_variables variable_1="Ko" variable_2="Ko"/>
<map_variables variable_1="Ki" variable_2="Ki"/>
<map_variables variable_1="i_CaNa" variable_2="i_CaNa"/>
<map_variables variable_1="i_CaK" variable_2="i_CaK"/>
</connection>
<connection>
<map_components component_1="L_type_Ca_channel" component_2="calcium_dynamics"/>
<map_variables variable_1="Cai" variable_2="Cai"/>
<map_variables variable_1="Cao" variable_2="Cao"/>
<map_variables variable_1="i_CaCa" variable_2="i_CaCa"/>
</connection>
<connection>
<map_components component_1="T_type_Ca_channel" component_2="calcium_dynamics"/>
<map_variables variable_1="i_Ca_T" variable_2="i_Ca_T"/>
</connection>
<connection>
<map_components component_1="slow_delayed_rectifier_potassium_current" component_2="ionic_concentrations"/>
<map_variables variable_1="Ki" variable_2="Ki"/>
<map_variables variable_1="Ko" variable_2="Ko"/>
<map_variables variable_1="Nao" variable_2="Nao"/>
<map_variables variable_1="Nai" variable_2="Nai"/>
<map_variables variable_1="i_Ks" variable_2="i_Ks"/>
</connection>
<connection>
<map_components component_1="slow_delayed_rectifier_potassium_current" component_2="calcium_dynamics"/>
<map_variables variable_1="Cai" variable_2="Cai"/>
</connection>
<connection>
<map_components component_1="rapid_delayed_rectifier_potassium_current" component_2="ionic_concentrations"/>
<map_variables variable_1="Ko" variable_2="Ko"/>
<map_variables variable_1="i_Kr" variable_2="i_Kr"/>
</connection>
<connection>
<map_components component_1="transient_outward_current" component_2="ionic_concentrations"/>
<map_variables variable_1="i_to" variable_2="i_to"/>
</connection>
<connection>
<map_components component_1="Na_Ca_exchanger" component_2="ionic_concentrations"/>
<map_variables variable_1="Nai" variable_2="Nai"/>
<map_variables variable_1="Nao" variable_2="Nao"/>
<map_variables variable_1="i_NaCa" variable_2="i_NaCa"/>
</connection>
<connection>
<map_components component_1="Na_Ca_exchanger" component_2="calcium_dynamics"/>
<map_variables variable_1="Cai" variable_2="Cai"/>
<map_variables variable_1="Cao" variable_2="Cao"/>
<map_variables variable_1="i_NaCa" variable_2="i_NaCa"/>
</connection>
<connection>
<map_components component_1="time_independent_potassium_current" component_2="ionic_concentrations"/>
<map_variables variable_1="Ki" variable_2="Ki"/>
<map_variables variable_1="Ko" variable_2="Ko"/>
<map_variables variable_1="i_K1" variable_2="i_K1"/>
</connection>
<connection>
<map_components component_1="ATP_sensitive_potassium_current" component_2="ionic_concentrations"/>
<map_variables variable_1="Ko" variable_2="Ko"/>
<map_variables variable_1="i_K_ATP" variable_2="i_K_ATP"/>
</connection>
<connection>
<map_components component_1="plateau_potassium_current" component_2="time_independent_potassium_current"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
</connection>
<connection>
<map_components component_1="rapid_delayed_rectifier_potassium_current" component_2="time_independent_potassium_current"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
</connection>
<connection>
<map_components component_1="ATP_sensitive_potassium_current" component_2="time_independent_potassium_current"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
</connection>
<connection>
<map_components component_1="transient_outward_current" component_2="time_independent_potassium_current"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
</connection>
<connection>
<map_components component_1="plateau_potassium_current" component_2="ionic_concentrations"/>
<map_variables variable_1="i_Kp" variable_2="i_Kp"/>
</connection>
<connection>
<map_components component_1="sarcolemmal_calcium_pump" component_2="calcium_dynamics"/>
<map_variables variable_1="i_p_Ca" variable_2="i_p_Ca"/>
<map_variables variable_1="Cai" variable_2="Cai"/>
</connection>
<connection>
<map_components component_1="T_type_Ca_channel" component_2="calcium_background_current"/>
<map_variables variable_1="E_Ca" variable_2="E_Ca"/>
</connection>
<connection>
<map_components component_1="sodium_background_current" component_2="ionic_concentrations"/>
<map_variables variable_1="i_Na_b" variable_2="i_Na_b"/>
</connection>
<connection>
<map_components component_1="calcium_background_current" component_2="calcium_dynamics"/>
<map_variables variable_1="Cai" variable_2="Cai"/>
<map_variables variable_1="Cao" variable_2="Cao"/>
<map_variables variable_1="i_Ca_b" variable_2="i_Ca_b"/>
</connection>
<connection>
<map_components component_1="sodium_potassium_pump" component_2="ionic_concentrations"/>
<map_variables variable_1="Nai" variable_2="Nai"/>
<map_variables variable_1="Nao" variable_2="Nao"/>
<map_variables variable_1="Ko" variable_2="Ko"/>
<map_variables variable_1="i_NaK" variable_2="i_NaK"/>
</connection>
<connection>
<map_components component_1="non_specific_calcium_activated_current" component_2="ionic_concentrations"/>
<map_variables variable_1="Nao" variable_2="Nao"/>
<map_variables variable_1="Nai" variable_2="Nai"/>
<map_variables variable_1="Ko" variable_2="Ko"/>
<map_variables variable_1="Ki" variable_2="Ki"/>
<map_variables variable_1="i_ns_Na" variable_2="i_ns_Na"/>
<map_variables variable_1="i_ns_K" variable_2="i_ns_K"/>
</connection>
<connection>
<map_components component_1="non_specific_calcium_activated_current" component_2="calcium_dynamics"/>
<map_variables variable_1="Cai" variable_2="Cai"/>
<map_variables variable_1="Cao" variable_2="Cao"/>
</connection>
<connection>
<map_components component_1="L_type_Ca_channel" component_2="non_specific_calcium_activated_current"/>
<map_variables variable_1="gamma_Nao" variable_2="gamma_Nao"/>
<map_variables variable_1="gamma_Nai" variable_2="gamma_Nai"/>
<map_variables variable_1="gamma_Ko" variable_2="gamma_Ko"/>
<map_variables variable_1="gamma_Ki" variable_2="gamma_Ki"/>
</connection>
<connection>
<map_components component_1="fast_sodium_current" component_2="fast_sodium_current_m_gate"/>
<map_variables variable_1="m" variable_2="m"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="fast_sodium_current" component_2="fast_sodium_current_h_gate"/>
<map_variables variable_1="h" variable_2="h"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="fast_sodium_current" component_2="fast_sodium_current_j_gate"/>
<map_variables variable_1="j" variable_2="j"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="L_type_Ca_channel" component_2="L_type_Ca_channel_d_gate"/>
<map_variables variable_1="d" variable_2="d"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="L_type_Ca_channel" component_2="L_type_Ca_channel_f_gate"/>
<map_variables variable_1="f" variable_2="f"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="L_type_Ca_channel" component_2="L_type_Ca_channel_f_Ca_gate"/>
<map_variables variable_1="f_Ca" variable_2="f_Ca"/>
<map_variables variable_1="Cai" variable_2="Cai"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="T_type_Ca_channel" component_2="T_type_Ca_channel_b_gate"/>
<map_variables variable_1="b" variable_2="b"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="T_type_Ca_channel" component_2="T_type_Ca_channel_g_gate"/>
<map_variables variable_1="g" variable_2="g"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="rapid_delayed_rectifier_potassium_current" component_2="rapid_delayed_rectifier_potassium_current_xr_gate"/>
<map_variables variable_1="xr" variable_2="xr"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="slow_delayed_rectifier_potassium_current" component_2="slow_delayed_rectifier_potassium_current_xs1_gate"/>
<map_variables variable_1="xs1" variable_2="xs1"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="slow_delayed_rectifier_potassium_current" component_2="slow_delayed_rectifier_potassium_current_xs2_gate"/>
<map_variables variable_1="xs2" variable_2="xs2"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="time_independent_potassium_current" component_2="time_independent_potassium_current_K1_gate"/>
<map_variables variable_1="K1_infinity" variable_2="K1_infinity"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="transient_outward_current" component_2="transient_outward_current_ydv_gate"/>
<map_variables variable_1="ydv" variable_2="ydv"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="transient_outward_current" component_2="transient_outward_current_zdv_gate"/>
<map_variables variable_1="zdv" variable_2="zdv"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="calcium_dynamics" component_2="ionic_concentrations"/>
<map_variables variable_1="V_myo" variable_2="V_myo"/>
<map_variables variable_1="A_cap" variable_2="A_cap"/>
</connection>
</model>
