- Author:
- pmr2.import <nobody@models.cellml.org>
- Date:
- 2009-06-17 14:20:23+12:00
- Desc:
- committing version05 of garny_kohl_hunter_boyett_noble_2003
- Permanent Source URI:
- http://models.cellml.org/workspace/garny_kohl_hunter_boyett_noble_2003/rawfile/c055c6f34490cabcf2015a986cd71391522ca5fd/garny_kohl_hunter_boyett_noble_2003.cellml
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<!--
This CellML file was generated on 11/03/2008 at 16:13:16 using:
COR (0.9.31.897)
Copyright 2002-2008 Dr Alan Garny
http://COR.physiol.ox.ac.uk/ - COR@physiol.ox.ac.uk
CellML 1.0 was used to generate this cellular model
http://www.CellML.org/
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<documentation xmlns="http://cellml.org/tmp-documentation">
<article>
<articleinfo>
<title>Mathematical Model Of Action Potentials In The Periphery Of The Sinoatrial Node, 2000</title>
<author>
<firstname>Penny</firstname>
<surname>Noble</surname>
<affiliation>
<shortaffil>Oxford University</shortaffil>
</affiliation>
</author>
</articleinfo>
<section id="sec_status">
<title>Model Status</title>
<para>
This version of the CellML model was created by Alan Garny of Oxford University, it has been unit checked and the model runs in both COR and PCEnv to reproduce the published results.
</para>
</section>
<sect1 id="sec_structure">
<title>Model Structure</title>
<para>
Cardiac multicellular modeling has traditionally focused on ventricular electromechanics. More recently, models of the atria have started to emerge, and there is much interest in addressing sinoatrial node (SAN) structure and function. The SAN has a heterogeneous structure, with smaller cells being located more centrally and larger ones toward the periphery. In addition, the central SAN cells have a lower maximum diastolic potential (MDP), upstroke velocity (UV), and intrinsic pacemaking rate than the peripheral cells. In the current model, Garny et al. (2003) build further on the SAN model published by Zhang et al. (2000) (also described in CellML) and add a third category of cell called transitional cells. These transitional cell types are obtained by gradation between central and peripheral cell models, using a scaling parameter implemented in the model as a function of cell location relative to the SAN centre. The variable is called dCell and it specifies the relative distance of the cell relative to the centre of the SAN: if dCell=1 it is a peripheral cell model, if dCell=0 it is a central cell, and if dCell has a value between 0 and 1 the model describes a transitional cell.
</para>
<para>
There is a second variable which varies between models; version. If version=0 the CellML model behaves like the Zhang et al. 2000 model. If version=1 the CellML model describes a 0D capable, or suitable for single cell modelling, and if version=2 the CellML model describes a 1D capable, or suitable for multicellular modelling. By default the CellML model is setup to describe a central SAN cell (dCell=0) suitable for single cell modelling (version=1).
</para>
<para>
The complete original paper reference is cited below.
</para>
<para>
<ulink url="http://www.blackwell-synergy.com/doi/abs/10.1046/j.1540.8167.90301.x">One-dimensional rabbit sinoatrial node models: benefits and limitations</ulink>, A. Garny, P. Kohl, P.J. Hunter, M.R. Boyett and D. Noble, 2003, <ulink url="http://www.blackwellpublishing.com/journal.asp?ref=1045-3873&site=1">
<emphasis>The Journal of Cardiovascular Electrophysiology</emphasis>
</ulink>, 14, S121-S132. (<ulink url="http://www.blackwell-synergy.com/doi/full/10.1046/j.1540.8167.90301.x">Full text</ulink> and PDF versions of the article are available on The Journal of Cardiovascular Electrophysiology website for journal subscribers.) <ulink url="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10899081&dopt=Abstract">PubMed ID: 14760914</ulink>
</para>
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<title>cell diagram of the Zhang et al SAN model showing ionic currents, pumps and exchangers within the sarcolemma and the sarcoplasmic reticulum</title>
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<caption>A schematic diagram describing the current flows across the cell membrane that are captured in the Garny <emphasis>et al</emphasis> 2003 'published' and "0D capable' models of the action potentials in the cells of the SA node. The 1D capable model has one additional current called I_Cap - or a persistant calcium current.</caption>
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</sect1>
</article>
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</piece>
<otherwise>
<apply>
<plus/>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="dimensionless">0.09518</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.06306</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">34.4</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<times/>
<cn cellml:units="dimensionless">1.662</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.2251</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">63.7</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<cn cellml:units="dimensionless">0.08693</cn>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>h</ci>
<apply>
<plus/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="dimensionless">1</cn>
<ci>F_Na</ci>
</apply>
<ci>h1</ci>
</apply>
<apply>
<times/>
<ci>F_Na</ci>
<ci>h2</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>h1</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>h1_infinity</ci>
<ci>h1</ci>
</apply>
<ci>tau_h1</ci>
</apply>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>h2</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>h2_infinity</ci>
<ci>h2</ci>
</apply>
<ci>tau_h2</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>h1_infinity</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">66.1</cn>
</apply>
<cn cellml:units="millivolt">6.4</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>h2_infinity</ci>
<ci>h1_infinity</ci>
</apply>
<apply>
<eq/>
<ci>tau_h1</ci>
<apply>
<plus/>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="second">3.717e-6</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.2815</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">17.11</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<times/>
<cn cellml:units="dimensionless">0.003732</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.3426</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">37.76</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<cn cellml:units="second">0.0005977</cn>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_h2</ci>
<apply>
<plus/>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="second">3.186e-8</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.6219</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">18.8</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<times/>
<cn cellml:units="dimensionless">7.189e-5</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.6683</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">34.07</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<cn cellml:units="second">0.003556</cn>
</apply>
</apply>
</math>
</component>
<component name="L_type_Ca_channel">
<variable name="Version" units="dimensionless" public_interface="in" private_interface="out"/>
<variable name="FCell" units="dimensionless" public_interface="in" private_interface="out"/>
<variable name="i_Ca_L" units="nanoA" public_interface="out"/>
<variable name="g_Ca_L_Centre_Published" units="microS" initial_value="0.0058"/>
<variable name="g_Ca_L_Centre_0DCapable" units="microS" initial_value="0.0057938"/>
<variable name="g_Ca_L_Centre_1DCapable" units="microS" initial_value="0.0082"/>
<variable name="g_Ca_L_Periphery_Published" units="microS" initial_value="0.0659"/>
<variable name="g_Ca_L_Periphery_0DCapable" units="microS" initial_value="0.06588648"/>
<variable name="g_Ca_L_Periphery_1DCapable" units="microS" initial_value="0.0659"/>
<variable name="g_Ca_L" units="microS"/>
<variable name="E_Ca_L" units="millivolt" initial_value="46.4"/>
<variable name="time" units="second" public_interface="in" private_interface="out"/>
<variable name="V" units="millivolt" public_interface="in" private_interface="out"/>
<variable name="d_L" units="dimensionless" private_interface="in"/>
<variable name="f_L" units="dimensionless" private_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_Ca_L</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_Ca_L_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_Ca_L_Periphery_Published</ci>
<ci>g_Ca_L_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_Ca_L_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_Ca_L_Periphery_0DCapable</ci>
<ci>g_Ca_L_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_Ca_L_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_Ca_L_Periphery_1DCapable</ci>
<ci>g_Ca_L_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_Ca_L</ci>
<apply>
<times/>
<ci>g_Ca_L</ci>
<apply>
<plus/>
<apply>
<times/>
<ci>f_L</ci>
<ci>d_L</ci>
</apply>
<apply>
<divide/>
<cn cellml:units="dimensionless">0.006</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">14.1</cn>
</apply>
</apply>
<cn cellml:units="millivolt">6</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Ca_L</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="L_type_Ca_channel_d_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="d_L" units="dimensionless" initial_value="0.04804900895" public_interface="out"/>
<variable name="alpha_d_L" units="per_second"/>
<variable name="beta_d_L" units="per_second"/>
<variable name="d_L_infinity" units="dimensionless"/>
<variable name="tau_d_L" units="second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>d_L</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>d_L_infinity</ci>
<ci>d_L</ci>
</apply>
<ci>tau_d_L</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>alpha_d_L</ci>
<piecewise>
<piece>
<apply>
<minus/>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt_second">28.38</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">35</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">35</cn>
</apply>
</apply>
<cn cellml:units="millivolt">2.5</cn>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="per_millivolt_second">84.9</cn>
<ci>V</ci>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.208</cn>
</apply>
<ci>V</ci>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<minus/>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt_second">28.39</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">35</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">35</cn>
</apply>
</apply>
<cn cellml:units="millivolt">2.5</cn>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="per_millivolt_second">84.9</cn>
<ci>V</ci>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.208</cn>
</apply>
<ci>V</ci>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<minus/>
<apply>
<divide/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt_second">28.4</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">35</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">35</cn>
</apply>
</apply>
<cn cellml:units="millivolt">2.5</cn>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="per_millivolt_second">84.9</cn>
<ci>V</ci>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.208</cn>
</apply>
<ci>V</ci>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>beta_d_L</ci>
<piecewise>
<piece>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="per_millivolt_second">11.43</cn>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">5</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.4</cn>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">5</cn>
</apply>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="per_millivolt_second">11.42</cn>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">5</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.4</cn>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">5</cn>
</apply>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>tau_d_L</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">2</cn>
<apply>
<plus/>
<ci>alpha_d_L</ci>
<ci>beta_d_L</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>d_L_infinity</ci>
<piecewise>
<piece>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">23.1</cn>
</apply>
</apply>
<cn cellml:units="millivolt">6</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">22.3</cn>
<apply>
<times/>
<cn cellml:units="millivolt">0.8</cn>
<ci>FCell</ci>
</apply>
</apply>
</apply>
<cn cellml:units="millivolt">6</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">22.2</cn>
</apply>
</apply>
<cn cellml:units="millivolt">6</cn>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
</math>
</component>
<component name="L_type_Ca_channel_f_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="f_L" units="dimensionless" initial_value="0.48779845203" public_interface="out"/>
<variable name="alpha_f_L" units="per_second"/>
<variable name="beta_f_L" units="per_second"/>
<variable name="f_L_infinity" units="dimensionless"/>
<variable name="tau_f_L" units="second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>f_L</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>f_L_infinity</ci>
<ci>f_L</ci>
</apply>
<ci>tau_f_L</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>alpha_f_L</ci>
<piecewise>
<piece>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="per_millivolt_second">3.75</cn>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">28</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">28</cn>
</apply>
<cn cellml:units="millivolt">4</cn>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<apply>
<times/>
<cn cellml:units="per_millivolt_second">3.12</cn>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">28</cn>
</apply>
</apply>
<apply>
<minus/>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">28</cn>
</apply>
<cn cellml:units="millivolt">4</cn>
</apply>
</apply>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>beta_f_L</ci>
<piecewise>
<piece>
<apply>
<divide/>
<cn cellml:units="per_second">30</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">28</cn>
</apply>
</apply>
<cn cellml:units="millivolt">4</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<cn cellml:units="per_second">25</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">28</cn>
</apply>
</apply>
<cn cellml:units="millivolt">4</cn>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>tau_f_L</ci>
<piecewise>
<piece>
<apply>
<divide/>
<apply>
<minus/>
<cn cellml:units="dimensionless">1.2</cn>
<apply>
<times/>
<cn cellml:units="dimensionless">0.2</cn>
<ci>FCell</ci>
</apply>
</apply>
<apply>
<plus/>
<ci>alpha_f_L</ci>
<ci>beta_f_L</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<ci>alpha_f_L</ci>
<ci>beta_f_L</ci>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>f_L_infinity</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">45</cn>
</apply>
<cn cellml:units="millivolt">5</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="T_type_Ca_channel">
<variable name="Version" units="dimensionless" public_interface="in" private_interface="out"/>
<variable name="FCell" units="dimensionless" public_interface="in" private_interface="out"/>
<variable name="i_Ca_T" units="nanoA" public_interface="out"/>
<variable name="g_Ca_T_Centre_Published" units="microS" initial_value="0.0043"/>
<variable name="g_Ca_T_Centre_0DCapable" units="microS" initial_value="0.00427806"/>
<variable name="g_Ca_T_Centre_1DCapable" units="microS" initial_value="0.0021"/>
<variable name="g_Ca_T_Periphery_Published" units="microS" initial_value="0.0139"/>
<variable name="g_Ca_T_Periphery_0DCapable" units="microS" initial_value="0.0138823"/>
<variable name="g_Ca_T_Periphery_1DCapable" units="microS" initial_value="0.00694"/>
<variable name="g_Ca_T" units="microS"/>
<variable name="E_Ca_T" units="millivolt" initial_value="45"/>
<variable name="time" units="second" public_interface="in" private_interface="out"/>
<variable name="V" units="millivolt" public_interface="in" private_interface="out"/>
<variable name="d_T" units="dimensionless" private_interface="in"/>
<variable name="f_T" units="dimensionless" private_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_Ca_T</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_Ca_T_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_Ca_T_Periphery_Published</ci>
<ci>g_Ca_T_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
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</apply>
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<piece>
<apply>
<plus/>
<ci>g_Ca_T_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_Ca_T_Periphery_0DCapable</ci>
<ci>g_Ca_T_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_Ca_T_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_Ca_T_Periphery_1DCapable</ci>
<ci>g_Ca_T_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
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<apply>
<eq/>
<ci>i_Ca_T</ci>
<apply>
<times/>
<ci>g_Ca_T</ci>
<ci>d_T</ci>
<ci>f_T</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Ca_T</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="T_type_Ca_channel_d_gate">
<variable name="d_T" units="dimensionless" initial_value="0.42074047435" public_interface="out"/>
<variable name="alpha_d_T" units="per_second"/>
<variable name="beta_d_T" units="per_second"/>
<variable name="d_T_infinity" units="dimensionless"/>
<variable name="tau_d_T" units="second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>d_T</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>d_T_infinity</ci>
<ci>d_T</ci>
</apply>
<ci>tau_d_T</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>alpha_d_T</ci>
<apply>
<times/>
<cn cellml:units="per_second">1068</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">26.3</cn>
</apply>
<cn cellml:units="millivolt">30</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>beta_d_T</ci>
<apply>
<times/>
<cn cellml:units="per_second">1068</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">26.3</cn>
</apply>
</apply>
<cn cellml:units="millivolt">30</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_d_T</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<ci>alpha_d_T</ci>
<ci>beta_d_T</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>d_T_infinity</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">37</cn>
</apply>
</apply>
<cn cellml:units="millivolt">6.8</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="T_type_Ca_channel_f_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="f_T" units="dimensionless" initial_value="0.038968420558" public_interface="out"/>
<variable name="alpha_f_T" units="per_second"/>
<variable name="beta_f_T" units="per_second"/>
<variable name="f_T_infinity" units="dimensionless"/>
<variable name="tau_f_T" units="second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>f_T</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>f_T_infinity</ci>
<ci>f_T</ci>
</apply>
<ci>tau_f_T</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>alpha_f_T</ci>
<piecewise>
<piece>
<apply>
<times/>
<cn cellml:units="per_second">15.3</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">71</cn>
<apply>
<times/>
<cn cellml:units="millivolt">0.7</cn>
<ci>FCell</ci>
</apply>
</apply>
</apply>
<cn cellml:units="millivolt">83.3</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<cn cellml:units="per_second">15.3</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">71.7</cn>
</apply>
</apply>
<cn cellml:units="millivolt">83.3</cn>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>beta_f_T</ci>
<piecewise>
<piece>
<apply>
<times/>
<cn cellml:units="per_second">15</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">71</cn>
</apply>
<cn cellml:units="millivolt">15.38</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<cn cellml:units="per_second">15</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">71.7</cn>
</apply>
<cn cellml:units="millivolt">15.38</cn>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>tau_f_T</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<ci>alpha_f_T</ci>
<ci>beta_f_T</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>f_T_infinity</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">71</cn>
</apply>
<cn cellml:units="millivolt">9</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="four_AP_sensitive_currents">
<variable name="Version" units="dimensionless" public_interface="in" private_interface="out"/>
<variable name="FCell" units="dimensionless" public_interface="in" private_interface="out"/>
<variable name="i_to" units="nanoA" public_interface="out"/>
<variable name="i_sus" units="nanoA" public_interface="out"/>
<variable name="g_to_Centre_Published" units="microS" initial_value="0.00491"/>
<variable name="g_to_Centre_0DCapable" units="microS" initial_value="0.004905"/>
<variable name="g_to_Centre_1DCapable" units="microS" initial_value="0.004905"/>
<variable name="g_to_Periphery_Published" units="microS" initial_value="0.03649"/>
<variable name="g_to_Periphery_0DCapable" units="microS" initial_value="0.036495"/>
<variable name="g_to_Periphery_1DCapable" units="microS" initial_value="0.0365"/>
<variable name="g_to" units="microS"/>
<variable name="g_sus_Centre_Published" units="microS" initial_value="6.65e-5"/>
<variable name="g_sus_Centre_0DCapable" units="microS" initial_value="6.645504e-5"/>
<variable name="g_sus_Centre_1DCapable" units="microS" initial_value="0.000266"/>
<variable name="g_sus_Periphery_Published" units="microS" initial_value="0.0114"/>
<variable name="g_sus_Periphery_0DCapable" units="microS" initial_value="0.01138376"/>
<variable name="g_sus_Periphery_1DCapable" units="microS" initial_value="0.0114"/>
<variable name="g_sus" units="microS"/>
<variable name="E_K" units="millivolt" public_interface="in"/>
<variable name="V" units="millivolt" public_interface="in" private_interface="out"/>
<variable name="time" units="second" public_interface="in" private_interface="out"/>
<variable name="q" units="dimensionless" private_interface="in"/>
<variable name="r" units="dimensionless" private_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_to</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_to_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_to_Periphery_Published</ci>
<ci>g_to_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_to_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_to_Periphery_0DCapable</ci>
<ci>g_to_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_to_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_to_Periphery_1DCapable</ci>
<ci>g_to_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>g_sus</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_sus_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_sus_Periphery_Published</ci>
<ci>g_sus_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_sus_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_sus_Periphery_0DCapable</ci>
<ci>g_sus_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_sus_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_sus_Periphery_1DCapable</ci>
<ci>g_sus_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_to</ci>
<apply>
<times/>
<ci>g_to</ci>
<ci>q</ci>
<ci>r</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>i_sus</ci>
<apply>
<times/>
<ci>g_sus</ci>
<ci>r</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="four_AP_sensitive_currents_q_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="q" units="dimensionless" initial_value="0.29760539675" public_interface="out"/>
<variable name="q_infinity" units="dimensionless"/>
<variable name="tau_q" units="second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>q</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>q_infinity</ci>
<ci>q</ci>
</apply>
<ci>tau_q</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>q_infinity</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">59.37</cn>
</apply>
<cn cellml:units="millivolt">13.1</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_q</ci>
<piecewise>
<piece>
<apply>
<plus/>
<cn cellml:units="second">0.0101</cn>
<apply>
<divide/>
<cn cellml:units="second">0.06517</cn>
<apply>
<times/>
<cn cellml:units="dimensionless">0.57</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.08</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">49</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="second">2.4e-5</cn>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.1</cn>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">50.93</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<times/>
<apply>
<divide/>
<cn cellml:units="dimensionless">0.001</cn>
<cn cellml:units="dimensionless">3</cn>
</apply>
<apply>
<plus/>
<cn cellml:units="second">30.31</cn>
<apply>
<divide/>
<cn cellml:units="second">195.5</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">0.5686</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.08161</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">39</cn>
<apply>
<times/>
<cn cellml:units="millivolt">10</cn>
<ci>FCell</ci>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.7174</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="dimensionless">0.2719</cn>
<apply>
<times/>
<cn cellml:units="dimensionless">0.1719</cn>
<ci>FCell</ci>
</apply>
</apply>
<cn cellml:units="per_millivolt">1</cn>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">40.93</cn>
<apply>
<times/>
<cn cellml:units="millivolt">10</cn>
<ci>FCell</ci>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<cn cellml:units="second">0.0101</cn>
<apply>
<divide/>
<cn cellml:units="second">0.06517</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">0.5686</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.08161</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">39</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.7174</cn>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.2719</cn>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">40.93</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
</math>
</component>
<component name="four_AP_sensitive_currents_r_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="r" units="dimensionless" initial_value="0.064402950262" public_interface="out"/>
<variable name="r_infinity" units="dimensionless"/>
<variable name="tau_r" units="second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>r</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>r_infinity</ci>
<ci>r</ci>
</apply>
<ci>tau_r</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>r_infinity</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">10.93</cn>
</apply>
</apply>
<cn cellml:units="millivolt">19.7</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>tau_r</ci>
<piecewise>
<piece>
<apply>
<times/>
<cn cellml:units="dimensionless">0.001</cn>
<apply>
<plus/>
<cn cellml:units="second">2.98</cn>
<apply>
<divide/>
<cn cellml:units="second">15.59</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">1.037</cn>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.09</cn>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">30.61</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.369</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.12</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">23.84</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<times/>
<cn cellml:units="dimensionless">0.0025</cn>
<apply>
<plus/>
<cn cellml:units="second">1.191</cn>
<apply>
<divide/>
<cn cellml:units="second">7.838</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">1.037</cn>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.09012</cn>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">30.61</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.369</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.119</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">23.84</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<cn cellml:units="dimensionless">0.001</cn>
<apply>
<plus/>
<cn cellml:units="second">2.98</cn>
<apply>
<divide/>
<cn cellml:units="second">19.59</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">1.037</cn>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.09012</cn>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">30.61</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.369</cn>
<apply>
<exp/>
<apply>
<times/>
<apply>
<minus/>
<cn cellml:units="per_millivolt">0.119</cn>
</apply>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">23.84</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
</math>
</component>
<component name="rapid_delayed_rectifying_potassium_current">
<variable name="Version" units="dimensionless" public_interface="in" private_interface="out"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_K_r" units="nanoA" public_interface="out"/>
<variable name="g_K_r_Centre_Published" units="microS" initial_value="0.000797"/>
<variable name="g_K_r_Centre_0DCapable" units="microS" initial_value="0.00079704"/>
<variable name="g_K_r_Centre_1DCapable" units="microS" initial_value="0.000738"/>
<variable name="g_K_r_Periphery_Published" units="microS" initial_value="0.016"/>
<variable name="g_K_r_Periphery_0DCapable" units="microS" initial_value="0.016"/>
<variable name="g_K_r_Periphery_1DCapable" units="microS" initial_value="0.0208"/>
<variable name="g_K_r" units="microS"/>
<variable name="P_a" units="dimensionless"/>
<variable name="E_K" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in" private_interface="out"/>
<variable name="V" units="millivolt" public_interface="in" private_interface="out"/>
<variable name="P_af" units="dimensionless" private_interface="in"/>
<variable name="P_as" units="dimensionless" private_interface="in"/>
<variable name="P_i" units="dimensionless" private_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_K_r</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_K_r_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_K_r_Periphery_Published</ci>
<ci>g_K_r_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_K_r_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_K_r_Periphery_0DCapable</ci>
<ci>g_K_r_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_K_r_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_K_r_Periphery_1DCapable</ci>
<ci>g_K_r_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_K_r</ci>
<apply>
<times/>
<ci>g_K_r</ci>
<ci>P_a</ci>
<ci>P_i</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>P_a</ci>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">0.6</cn>
<ci>P_af</ci>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.4</cn>
<ci>P_as</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="rapid_delayed_rectifying_potassium_current_P_af_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="P_af" units="dimensionless" initial_value="0.13034201158" public_interface="out"/>
<variable name="P_af_infinity" units="dimensionless" public_interface="out"/>
<variable name="tau_P_af" units="second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>P_af</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>P_af_infinity</ci>
<ci>P_af</ci>
</apply>
<ci>tau_P_af</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>P_af_infinity</ci>
<piecewise>
<piece>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">14.2</cn>
</apply>
</apply>
<cn cellml:units="millivolt">10.6</cn>
</apply>
</apply>
</apply>
</apply>
<apply>
<neq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">2</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">13.2</cn>
</apply>
</apply>
<cn cellml:units="millivolt">10.6</cn>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>tau_P_af</ci>
<piecewise>
<piece>
<apply>
<divide/>
<cn cellml:units="second">1</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">37.2</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">9</cn>
</apply>
<cn cellml:units="millivolt">15.9</cn>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.96</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">9</cn>
</apply>
</apply>
<cn cellml:units="millivolt">22.5</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<neq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">2</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<cn cellml:units="second">1</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">37.2</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">10</cn>
</apply>
<cn cellml:units="millivolt">15.9</cn>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.96</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">10</cn>
</apply>
</apply>
<cn cellml:units="millivolt">22.5</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
</math>
</component>
<component name="rapid_delayed_rectifying_potassium_current_P_as_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="P_as" units="dimensionless" initial_value="0.46960956028" public_interface="out"/>
<variable name="P_as_infinity" units="dimensionless"/>
<variable name="tau_P_as" units="second"/>
<variable name="P_af_infinity" units="dimensionless" public_interface="in"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>P_as</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>P_as_infinity</ci>
<ci>P_as</ci>
</apply>
<ci>tau_P_as</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>P_as_infinity</ci>
<ci>P_af_infinity</ci>
</apply>
<apply>
<eq/>
<ci>tau_P_as</ci>
<piecewise>
<piece>
<apply>
<divide/>
<cn cellml:units="second">1</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">4.2</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">9</cn>
</apply>
<cn cellml:units="millivolt">17</cn>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.15</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">9</cn>
</apply>
</apply>
<cn cellml:units="millivolt">21.6</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<neq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">2</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<cn cellml:units="second">1</cn>
<apply>
<plus/>
<apply>
<times/>
<cn cellml:units="dimensionless">4.2</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">10</cn>
</apply>
<cn cellml:units="millivolt">17</cn>
</apply>
</apply>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">0.15</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">10</cn>
</apply>
</apply>
<cn cellml:units="millivolt">21.6</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
</math>
</component>
<component name="rapid_delayed_rectifying_potassium_current_P_i_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="P_i" units="dimensionless" initial_value="0.87993375273" public_interface="out"/>
<variable name="P_i_infinity" units="dimensionless"/>
<variable name="tau_P_i" units="second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>tau_P_i</ci>
<piecewise>
<piece>
<cn cellml:units="second">0.002</cn>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<cn cellml:units="second">0.002</cn>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<cn cellml:units="second">0.006</cn>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>P_i</ci>
</apply>
<apply>
<divide/>
<apply>
<minus/>
<ci>P_i_infinity</ci>
<ci>P_i</ci>
</apply>
<ci>tau_P_i</ci>
</apply>
</apply>
<apply>
<eq/>
<ci>P_i_infinity</ci>
<apply>
<divide/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">18.6</cn>
</apply>
<cn cellml:units="millivolt">10.1</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="slow_delayed_rectifying_potassium_current">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_K_s" units="nanoA" public_interface="out"/>
<variable name="g_K_s_Centre_Published" units="microS" initial_value="0.000518"/>
<variable name="g_K_s_Centre_0DCapable" units="microS" initial_value="0.0003445"/>
<variable name="g_K_s_Centre_1DCapable" units="microS" initial_value="0.000345"/>
<variable name="g_K_s_Periphery_Published" units="microS" initial_value="0.0104"/>
<variable name="g_K_s_Periphery_0DCapable" units="microS" initial_value="0.0104"/>
<variable name="g_K_s_Periphery_1DCapable" units="microS" initial_value="0.0104"/>
<variable name="g_K_s" units="microS"/>
<variable name="E_K_s" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in" private_interface="out"/>
<variable name="V" units="millivolt" public_interface="in" private_interface="out"/>
<variable name="xs" units="dimensionless" private_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_K_s</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_K_s_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_K_s_Periphery_Published</ci>
<ci>g_K_s_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_K_s_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_K_s_Periphery_0DCapable</ci>
<ci>g_K_s_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_K_s_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_K_s_Periphery_1DCapable</ci>
<ci>g_K_s_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_K_s</ci>
<apply>
<times/>
<ci>g_K_s</ci>
<apply>
<power/>
<ci>xs</ci>
<cn cellml:units="dimensionless">2</cn>
</apply>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K_s</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="slow_delayed_rectifying_potassium_current_xs_gate">
<variable name="xs" units="dimensionless" initial_value="0.082293827208" public_interface="out"/>
<variable name="alpha_xs" units="per_second"/>
<variable name="beta_xs" units="per_second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>xs</ci>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>alpha_xs</ci>
<apply>
<minus/>
<cn cellml:units="dimensionless">1</cn>
<ci>xs</ci>
</apply>
</apply>
<apply>
<times/>
<ci>beta_xs</ci>
<ci>xs</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>alpha_xs</ci>
<apply>
<divide/>
<cn cellml:units="per_second">14</cn>
<apply>
<plus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">40</cn>
</apply>
</apply>
<cn cellml:units="millivolt">9</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>beta_xs</ci>
<apply>
<times/>
<cn cellml:units="per_second">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<ci>V</ci>
</apply>
<cn cellml:units="millivolt">45</cn>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="hyperpolarisation_activated_current">
<variable name="Version" units="dimensionless" public_interface="in" private_interface="out"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_f_Na" units="nanoA" public_interface="out"/>
<variable name="i_f_K" units="nanoA" public_interface="out"/>
<variable name="g_f_Na_Centre_Published" units="microS" initial_value="0.000548"/>
<variable name="g_f_Na_Centre_0DCapable" units="microS" initial_value="0.0005465"/>
<variable name="g_f_Na_Centre_1DCapable" units="microS" initial_value="0.000437"/>
<variable name="g_f_Na_Periphery_Published" units="microS" initial_value="0.0069"/>
<variable name="g_f_Na_Periphery_0DCapable" units="microS" initial_value="0.006875"/>
<variable name="g_f_Na_Periphery_1DCapable" units="microS" initial_value="0.0055"/>
<variable name="g_f_Na" units="microS"/>
<variable name="g_f_K_Centre_Published" units="microS" initial_value="0.000548"/>
<variable name="g_f_K_Centre_0DCapable" units="microS" initial_value="0.0005465"/>
<variable name="g_f_K_Centre_1DCapable" units="microS" initial_value="0.000437"/>
<variable name="g_f_K_Periphery_Published" units="microS" initial_value="0.0069"/>
<variable name="g_f_K_Periphery_0DCapable" units="microS" initial_value="0.006875"/>
<variable name="g_f_K_Periphery_1DCapable" units="microS" initial_value="0.0055"/>
<variable name="g_f_K" units="microS"/>
<variable name="E_K" units="millivolt" public_interface="in"/>
<variable name="E_Na" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in" private_interface="out"/>
<variable name="V" units="millivolt" public_interface="in" private_interface="out"/>
<variable name="y" units="dimensionless" private_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_f_Na</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_f_Na_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_f_Na_Periphery_Published</ci>
<ci>g_f_Na_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_f_Na_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_f_Na_Periphery_0DCapable</ci>
<ci>g_f_Na_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_f_Na_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_f_Na_Periphery_1DCapable</ci>
<ci>g_f_Na_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_f_Na</ci>
<piecewise>
<piece>
<apply>
<times/>
<ci>g_f_Na</ci>
<ci>y</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Na</ci>
</apply>
</apply>
<apply>
<neq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">2</cn>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<ci>g_f_Na</ci>
<ci>y</ci>
<apply>
<minus/>
<ci>V</ci>
<cn cellml:units="millivolt">77.6</cn>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>g_f_K</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_f_K_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_f_K_Periphery_Published</ci>
<ci>g_f_K_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_f_K_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_f_K_Periphery_0DCapable</ci>
<ci>g_f_K_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_f_K_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_f_K_Periphery_1DCapable</ci>
<ci>g_f_K_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_f_K</ci>
<piecewise>
<piece>
<apply>
<times/>
<ci>g_f_K</ci>
<ci>y</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
<apply>
<neq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">2</cn>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<ci>g_f_K</ci>
<ci>y</ci>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">102</cn>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
</math>
</component>
<component name="hyperpolarisation_activated_current_y_gate">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="y" units="dimensionless" initial_value="0.03889291759" public_interface="out"/>
<variable name="alpha_y" units="per_second"/>
<variable name="beta_y" units="per_second"/>
<variable name="V" units="millivolt" public_interface="in"/>
<variable name="time" units="second" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>time</ci>
</bvar>
<ci>y</ci>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>alpha_y</ci>
<apply>
<minus/>
<cn cellml:units="dimensionless">1</cn>
<ci>y</ci>
</apply>
</apply>
<apply>
<times/>
<ci>beta_y</ci>
<ci>y</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>alpha_y</ci>
<piecewise>
<piece>
<apply>
<times/>
<cn cellml:units="per_second">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">78.91</cn>
</apply>
</apply>
<cn cellml:units="millivolt">26.62</cn>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<cn cellml:units="per_second">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">78.91</cn>
</apply>
</apply>
<cn cellml:units="millivolt">26.63</cn>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>beta_y</ci>
<apply>
<times/>
<cn cellml:units="per_second">1</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">75.13</cn>
</apply>
<cn cellml:units="millivolt">21.25</cn>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="sodium_background_current">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_b_Na" units="nanoA" public_interface="out"/>
<variable name="g_b_Na_Centre_Published" units="microS" initial_value="5.8e-5"/>
<variable name="g_b_Na_Centre_0DCapable" units="microS" initial_value="5.81818e-5"/>
<variable name="g_b_Na_Centre_1DCapable" units="microS" initial_value="5.8e-5"/>
<variable name="g_b_Na_Periphery_Published" units="microS" initial_value="0.000189"/>
<variable name="g_b_Na_Periphery_0DCapable" units="microS" initial_value="0.0001888"/>
<variable name="g_b_Na_Periphery_1DCapable" units="microS" initial_value="0.000189"/>
<variable name="g_b_Na" units="microS"/>
<variable name="E_Na" units="millivolt" public_interface="in"/>
<variable name="V" units="millivolt" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_b_Na</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_b_Na_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_Na_Periphery_Published</ci>
<ci>g_b_Na_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_b_Na_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_Na_Periphery_0DCapable</ci>
<ci>g_b_Na_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_b_Na_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_Na_Periphery_1DCapable</ci>
<ci>g_b_Na_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_b_Na</ci>
<apply>
<times/>
<ci>g_b_Na</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Na</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="potassium_background_current">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_b_K" units="nanoA" public_interface="out"/>
<variable name="g_b_K_Centre_Published" units="microS" initial_value="2.52e-5"/>
<variable name="g_b_K_Centre_0DCapable" units="microS" initial_value="2.523636e-5"/>
<variable name="g_b_K_Centre_1DCapable" units="microS" initial_value="2.52e-5"/>
<variable name="g_b_K_Periphery_Published" units="microS" initial_value="8.19e-5"/>
<variable name="g_b_K_Periphery_0DCapable" units="microS" initial_value="8.1892e-5"/>
<variable name="g_b_K_Periphery_1DCapable" units="microS" initial_value="8.19e-5"/>
<variable name="g_b_K" units="microS"/>
<variable name="E_K" units="millivolt" public_interface="in"/>
<variable name="V" units="millivolt" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_b_K</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_b_K_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_K_Periphery_Published</ci>
<ci>g_b_K_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_b_K_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_K_Periphery_0DCapable</ci>
<ci>g_b_K_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_b_K_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_K_Periphery_1DCapable</ci>
<ci>g_b_K_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_b_K</ci>
<apply>
<times/>
<ci>g_b_K</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_K</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="calcium_background_current">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_b_Ca" units="nanoA" public_interface="out"/>
<variable name="g_b_Ca_Centre_Published" units="microS" initial_value="1.32e-5"/>
<variable name="g_b_Ca_Centre_0DCapable" units="microS" initial_value="1.3236e-5"/>
<variable name="g_b_Ca_Centre_1DCapable" units="microS" initial_value="1.323e-5"/>
<variable name="g_b_Ca_Periphery_Published" units="microS" initial_value="4.3e-5"/>
<variable name="g_b_Ca_Periphery_0DCapable" units="microS" initial_value="4.2952e-5"/>
<variable name="g_b_Ca_Periphery_1DCapable" units="microS" initial_value="4.29e-5"/>
<variable name="g_b_Ca" units="microS"/>
<variable name="E_Ca" units="millivolt" public_interface="in"/>
<variable name="V" units="millivolt" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>g_b_Ca</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>g_b_Ca_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_Ca_Periphery_Published</ci>
<ci>g_b_Ca_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>g_b_Ca_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_Ca_Periphery_0DCapable</ci>
<ci>g_b_Ca_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>g_b_Ca_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>g_b_Ca_Periphery_1DCapable</ci>
<ci>g_b_Ca_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_b_Ca</ci>
<apply>
<times/>
<ci>g_b_Ca</ci>
<apply>
<minus/>
<ci>V</ci>
<ci>E_Ca</ci>
</apply>
</apply>
</apply>
</math>
</component>
<component name="sodium_calcium_exchanger">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_NaCa" units="nanoA" public_interface="out"/>
<variable name="k_NaCa_Centre_Published" units="nanoA" initial_value="2.7e-6"/>
<variable name="k_NaCa_Centre_0DCapable" units="nanoA" initial_value="2.7229e-6"/>
<variable name="k_NaCa_Centre_1DCapable" units="nanoA" initial_value="2.8e-6"/>
<variable name="k_NaCa_Periphery_Published" units="nanoA" initial_value="8.8e-6"/>
<variable name="k_NaCa_Periphery_0DCapable" units="nanoA" initial_value="8.83584e-6"/>
<variable name="k_NaCa_Periphery_1DCapable" units="nanoA" initial_value="8.8e-6"/>
<variable name="k_NaCa" units="nanoA"/>
<variable name="d_NaCa" units="dimensionless" initial_value="0.0001"/>
<variable name="gamma_NaCa" units="dimensionless" initial_value="0.5"/>
<variable name="Na_i" units="millimolar" public_interface="in"/>
<variable name="Na_o" units="millimolar" public_interface="in"/>
<variable name="Ca_i" units="millimolar" public_interface="in"/>
<variable name="Ca_o" units="millimolar" public_interface="in"/>
<variable name="V" units="millivolt" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>k_NaCa</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>k_NaCa_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>k_NaCa_Periphery_Published</ci>
<ci>k_NaCa_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>k_NaCa_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>k_NaCa_Periphery_0DCapable</ci>
<ci>k_NaCa_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>k_NaCa_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>k_NaCa_Periphery_1DCapable</ci>
<ci>k_NaCa_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_NaCa</ci>
<piecewise>
<piece>
<apply>
<divide/>
<apply>
<times/>
<ci>k_NaCa</ci>
<apply>
<minus/>
<apply>
<times/>
<apply>
<power/>
<ci>Na_i</ci>
<cn cellml:units="dimensionless">3</cn>
</apply>
<ci>Ca_o</ci>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.03743</cn>
<ci>V</ci>
<ci>gamma_NaCa</ci>
</apply>
</apply>
</apply>
<apply>
<times/>
<apply>
<power/>
<ci>Na_o</ci>
<cn cellml:units="dimensionless">3</cn>
</apply>
<ci>Ca_i</ci>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.0374</cn>
<ci>V</ci>
<apply>
<minus/>
<ci>gamma_NaCa</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn cellml:units="millimolar4">1</cn>
<apply>
<times/>
<ci>d_NaCa</ci>
<apply>
<plus/>
<apply>
<times/>
<ci>Ca_i</ci>
<apply>
<power/>
<ci>Na_o</ci>
<cn cellml:units="dimensionless">3</cn>
</apply>
</apply>
<apply>
<times/>
<ci>Ca_o</ci>
<apply>
<power/>
<ci>Na_i</ci>
<cn cellml:units="dimensionless">3</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<otherwise>
<apply>
<divide/>
<apply>
<times/>
<ci>k_NaCa</ci>
<apply>
<minus/>
<apply>
<times/>
<apply>
<power/>
<ci>Na_i</ci>
<cn cellml:units="dimensionless">3</cn>
</apply>
<ci>Ca_o</ci>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.03743</cn>
<ci>V</ci>
<ci>gamma_NaCa</ci>
</apply>
</apply>
</apply>
<apply>
<times/>
<apply>
<power/>
<ci>Na_o</ci>
<cn cellml:units="dimensionless">3</cn>
</apply>
<ci>Ca_i</ci>
<apply>
<exp/>
<apply>
<times/>
<cn cellml:units="per_millivolt">0.03743</cn>
<ci>V</ci>
<apply>
<minus/>
<ci>gamma_NaCa</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<plus/>
<cn cellml:units="millimolar4">1</cn>
<apply>
<times/>
<ci>d_NaCa</ci>
<apply>
<plus/>
<apply>
<times/>
<ci>Ca_i</ci>
<apply>
<power/>
<ci>Na_o</ci>
<cn cellml:units="dimensionless">3</cn>
</apply>
</apply>
<apply>
<times/>
<ci>Ca_o</ci>
<apply>
<power/>
<ci>Na_i</ci>
<cn cellml:units="dimensionless">3</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
</math>
</component>
<component name="sodium_potassium_pump">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_p" units="nanoA" public_interface="out"/>
<variable name="K_m_Na" units="millimolar" initial_value="5.64"/>
<variable name="K_m_K" units="millimolar" initial_value="0.621"/>
<variable name="i_p_max_Centre_Published" units="nanoA" initial_value="0.0478"/>
<variable name="i_p_max_Centre_0DCapable" units="nanoA" initial_value="0.04782545"/>
<variable name="i_p_max_Centre_1DCapable" units="nanoA" initial_value="0.0478"/>
<variable name="i_p_max_Periphery_Published" units="nanoA" initial_value="0.16"/>
<variable name="i_p_max_Periphery_0DCapable" units="nanoA" initial_value="0.1551936"/>
<variable name="i_p_max_Periphery_1DCapable" units="nanoA" initial_value="0.16"/>
<variable name="i_p_max" units="nanoA"/>
<variable name="Na_i" units="millimolar" public_interface="in"/>
<variable name="K_o" units="millimolar" public_interface="in"/>
<variable name="V" units="millivolt" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>i_p_max</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>i_p_max_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>i_p_max_Periphery_Published</ci>
<ci>i_p_max_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>i_p_max_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>i_p_max_Periphery_0DCapable</ci>
<ci>i_p_max_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>i_p_max_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>i_p_max_Periphery_1DCapable</ci>
<ci>i_p_max_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_p</ci>
<apply>
<divide/>
<apply>
<times/>
<ci>i_p_max</ci>
<apply>
<power/>
<apply>
<divide/>
<ci>Na_i</ci>
<apply>
<plus/>
<ci>K_m_Na</ci>
<ci>Na_i</ci>
</apply>
</apply>
<cn cellml:units="dimensionless">3</cn>
</apply>
<apply>
<power/>
<apply>
<divide/>
<ci>K_o</ci>
<apply>
<plus/>
<ci>K_m_K</ci>
<ci>K_o</ci>
</apply>
</apply>
<cn cellml:units="dimensionless">2</cn>
</apply>
<cn cellml:units="dimensionless">1.6</cn>
</apply>
<apply>
<plus/>
<cn cellml:units="dimensionless">1.5</cn>
<apply>
<exp/>
<apply>
<divide/>
<apply>
<minus/>
<apply>
<plus/>
<ci>V</ci>
<cn cellml:units="millivolt">60</cn>
</apply>
</apply>
<cn cellml:units="millivolt">40</cn>
</apply>
</apply>
</apply>
</apply>
</apply>
</math>
</component>
<component name="persistent_calcium_current">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="FCell" units="dimensionless" public_interface="in"/>
<variable name="i_Ca_p" units="nanoA" public_interface="out"/>
<variable name="i_Ca_p_max_Centre_Published" units="nanoA" initial_value="0"/>
<variable name="i_Ca_p_max_Centre_0DCapable" units="nanoA" initial_value="0"/>
<variable name="i_Ca_p_max_Centre_1DCapable" units="nanoA" initial_value="0.0042"/>
<variable name="i_Ca_p_max_Periphery_Published" units="nanoA" initial_value="0"/>
<variable name="i_Ca_p_max_Periphery_0DCapable" units="nanoA" initial_value="0"/>
<variable name="i_Ca_p_max_Periphery_1DCapable" units="nanoA" initial_value="0.03339"/>
<variable name="i_Ca_p_max" units="nanoA"/>
<variable name="Ca_i" units="millimolar" public_interface="in"/>
<variable name="V" units="millivolt" public_interface="in"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<ci>i_Ca_p_max</ci>
<piecewise>
<piece>
<apply>
<plus/>
<ci>i_Ca_p_max_Centre_Published</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>i_Ca_p_max_Periphery_Published</ci>
<ci>i_Ca_p_max_Centre_Published</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<piece>
<apply>
<plus/>
<ci>i_Ca_p_max_Centre_0DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>i_Ca_p_max_Periphery_0DCapable</ci>
<ci>i_Ca_p_max_Centre_0DCapable</ci>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">1</cn>
</apply>
</piece>
<otherwise>
<apply>
<plus/>
<ci>i_Ca_p_max_Centre_1DCapable</ci>
<apply>
<times/>
<ci>FCell</ci>
<apply>
<minus/>
<ci>i_Ca_p_max_Periphery_1DCapable</ci>
<ci>i_Ca_p_max_Centre_1DCapable</ci>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
<apply>
<eq/>
<ci>i_Ca_p</ci>
<apply>
<divide/>
<apply>
<times/>
<ci>i_Ca_p_max</ci>
<ci>Ca_i</ci>
</apply>
<apply>
<plus/>
<ci>Ca_i</ci>
<cn cellml:units="millimolar">0.0004</cn>
</apply>
</apply>
</apply>
</math>
</component>
<component name="ionic_concentrations">
<variable name="Na_i" units="millimolar" initial_value="8" public_interface="out"/>
<variable name="Na_o" units="millimolar" initial_value="140" public_interface="out"/>
<variable name="Ca_i" units="millimolar" initial_value="0.0001" public_interface="out"/>
<variable name="Ca_o" units="millimolar" initial_value="2" public_interface="out"/>
<variable name="K_i" units="millimolar" initial_value="140" public_interface="out"/>
<variable name="K_o" units="millimolar" initial_value="5.4" public_interface="out"/>
</component>
<component name="reversal_and_equilibrium_potentials">
<variable name="Version" units="dimensionless" public_interface="in"/>
<variable name="E_Na" units="millivolt" public_interface="out"/>
<variable name="E_K" units="millivolt" public_interface="out"/>
<variable name="E_K_s" units="millivolt" public_interface="out"/>
<variable name="E_Ca" units="millivolt" public_interface="out"/>
<variable name="K_o" units="millimolar" public_interface="in"/>
<variable name="Na_o" units="millimolar" public_interface="in"/>
<variable name="K_i" units="millimolar" public_interface="in"/>
<variable name="Na_i" units="millimolar" public_interface="in"/>
<variable name="Ca_o" units="millimolar" public_interface="in"/>
<variable name="Ca_i" units="millimolar" public_interface="in"/>
<variable name="R" units="millijoule_per_mole_kelvin" public_interface="in"/>
<variable name="F" units="coulomb_per_mole" public_interface="in"/>
<variable name="T" units="kelvin" public_interface="in"/>
<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>Na_o</ci>
<ci>Na_i</ci>
</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>K_o</ci>
<ci>K_i</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>E_Ca</ci>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
<apply>
<times/>
<cn cellml:units="dimensionless">2</cn>
<ci>F</ci>
</apply>
</apply>
<apply>
<ln/>
<apply>
<divide/>
<ci>Ca_o</ci>
<ci>Ca_i</ci>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>E_K_s</ci>
<piecewise>
<piece>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
<ci>F</ci>
</apply>
<apply>
<ln/>
<apply>
<divide/>
<apply>
<plus/>
<ci>K_o</ci>
<apply>
<times/>
<cn cellml:units="dimensionless">0.12</cn>
<ci>Na_o</ci>
</apply>
</apply>
<apply>
<plus/>
<ci>K_i</ci>
<apply>
<times/>
<cn cellml:units="dimensionless">0.12</cn>
<ci>Na_i</ci>
</apply>
</apply>
</apply>
</apply>
</apply>
<apply>
<eq/>
<ci>Version</ci>
<cn cellml:units="dimensionless">0</cn>
</apply>
</piece>
<otherwise>
<apply>
<times/>
<apply>
<divide/>
<apply>
<times/>
<ci>R</ci>
<ci>T</ci>
</apply>
<ci>F</ci>
</apply>
<apply>
<ln/>
<apply>
<divide/>
<apply>
<plus/>
<ci>K_o</ci>
<apply>
<times/>
<cn cellml:units="dimensionless">0.03</cn>
<ci>Na_o</ci>
</apply>
</apply>
<apply>
<plus/>
<ci>K_i</ci>
<apply>
<times/>
<cn cellml:units="dimensionless">0.03</cn>
<ci>Na_i</ci>
</apply>
</apply>
</apply>
</apply>
</apply>
</otherwise>
</piecewise>
</apply>
</math>
</component>
<group>
<relationship_ref relationship="containment"/>
<component_ref component="membrane">
<component_ref component="sodium_current">
<component_ref component="sodium_current_m_gate"/>
<component_ref component="sodium_current_h_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_ref component="T_type_Ca_channel">
<component_ref component="T_type_Ca_channel_d_gate"/>
<component_ref component="T_type_Ca_channel_f_gate"/>
</component_ref>
<component_ref component="four_AP_sensitive_currents">
<component_ref component="four_AP_sensitive_currents_q_gate"/>
<component_ref component="four_AP_sensitive_currents_r_gate"/>
</component_ref>
<component_ref component="rapid_delayed_rectifying_potassium_current">
<component_ref component="rapid_delayed_rectifying_potassium_current_P_af_gate"/>
<component_ref component="rapid_delayed_rectifying_potassium_current_P_as_gate"/>
<component_ref component="rapid_delayed_rectifying_potassium_current_P_i_gate"/>
</component_ref>
<component_ref component="slow_delayed_rectifying_potassium_current">
<component_ref component="slow_delayed_rectifying_potassium_current_xs_gate"/>
</component_ref>
<component_ref component="hyperpolarisation_activated_current">
<component_ref component="hyperpolarisation_activated_current_y_gate"/>
</component_ref>
<component_ref component="sodium_background_current"/>
<component_ref component="calcium_background_current"/>
<component_ref component="potassium_background_current"/>
<component_ref component="sodium_calcium_exchanger"/>
<component_ref component="sodium_potassium_pump"/>
<component_ref component="persistent_calcium_current"/>
<component_ref component="ionic_concentrations"/>
<component_ref component="reversal_and_equilibrium_potentials"/>
</component_ref>
</group>
<group>
<relationship_ref relationship="encapsulation"/>
<component_ref component="sodium_current">
<component_ref component="sodium_current_m_gate"/>
<component_ref component="sodium_current_h_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_ref component="T_type_Ca_channel">
<component_ref component="T_type_Ca_channel_d_gate"/>
<component_ref component="T_type_Ca_channel_f_gate"/>
</component_ref>
<component_ref component="four_AP_sensitive_currents">
<component_ref component="four_AP_sensitive_currents_q_gate"/>
<component_ref component="four_AP_sensitive_currents_r_gate"/>
</component_ref>
<component_ref component="rapid_delayed_rectifying_potassium_current">
<component_ref component="rapid_delayed_rectifying_potassium_current_P_af_gate"/>
<component_ref component="rapid_delayed_rectifying_potassium_current_P_as_gate"/>
<component_ref component="rapid_delayed_rectifying_potassium_current_P_i_gate"/>
</component_ref>
<component_ref component="slow_delayed_rectifying_potassium_current">
<component_ref component="slow_delayed_rectifying_potassium_current_xs_gate"/>
</component_ref>
<component_ref component="hyperpolarisation_activated_current">
<component_ref component="hyperpolarisation_activated_current_y_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="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="four_AP_sensitive_currents" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="rapid_delayed_rectifying_potassium_current" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="slow_delayed_rectifying_potassium_current" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="hyperpolarisation_activated_current" component_2="environment"/>
<map_variables variable_1="time" variable_2="time"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="sodium_current"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_Na" variable_2="i_Na"/>
<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"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="L_type_Ca_channel"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_Ca_L" variable_2="i_Ca_L"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="T_type_Ca_channel"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_Ca_T" variable_2="i_Ca_T"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="four_AP_sensitive_currents"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_to" variable_2="i_to"/>
<map_variables variable_1="i_sus" variable_2="i_sus"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="rapid_delayed_rectifying_potassium_current"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_K_r" variable_2="i_K_r"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="slow_delayed_rectifying_potassium_current"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_K_s" variable_2="i_K_s"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="hyperpolarisation_activated_current"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_f_Na" variable_2="i_f_Na"/>
<map_variables variable_1="i_f_K" variable_2="i_f_K"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="sodium_background_current"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_b_Na" variable_2="i_b_Na"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="potassium_background_current"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_b_K" variable_2="i_b_K"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="calcium_background_current"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="V" variable_2="V"/>
<map_variables variable_1="i_b_Ca" variable_2="i_b_Ca"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="sodium_calcium_exchanger"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_NaCa" variable_2="i_NaCa"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="sodium_potassium_pump"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_p" variable_2="i_p"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="persistent_calcium_current"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="i_Ca_p" variable_2="i_Ca_p"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="membrane" component_2="reversal_and_equilibrium_potentials"/>
<map_variables variable_1="Version" variable_2="Version"/>
<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="reversal_and_equilibrium_potentials" component_2="sodium_current"/>
<map_variables variable_1="E_Na" variable_2="E_Na"/>
</connection>
<connection>
<map_components component_1="ionic_concentrations" component_2="sodium_current"/>
<map_variables variable_1="Na_o" variable_2="Na_o"/>
</connection>
<connection>
<map_components component_1="reversal_and_equilibrium_potentials" component_2="four_AP_sensitive_currents"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
</connection>
<connection>
<map_components component_1="reversal_and_equilibrium_potentials" component_2="rapid_delayed_rectifying_potassium_current"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
</connection>
<connection>
<map_components component_1="reversal_and_equilibrium_potentials" component_2="slow_delayed_rectifying_potassium_current"/>
<map_variables variable_1="E_K_s" variable_2="E_K_s"/>
</connection>
<connection>
<map_components component_1="reversal_and_equilibrium_potentials" component_2="hyperpolarisation_activated_current"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
<map_variables variable_1="E_Na" variable_2="E_Na"/>
</connection>
<connection>
<map_components component_1="reversal_and_equilibrium_potentials" component_2="sodium_background_current"/>
<map_variables variable_1="E_Na" variable_2="E_Na"/>
</connection>
<connection>
<map_components component_1="reversal_and_equilibrium_potentials" component_2="potassium_background_current"/>
<map_variables variable_1="E_K" variable_2="E_K"/>
</connection>
<connection>
<map_components component_1="reversal_and_equilibrium_potentials" component_2="calcium_background_current"/>
<map_variables variable_1="E_Ca" variable_2="E_Ca"/>
</connection>
<connection>
<map_components component_1="sodium_calcium_exchanger" component_2="ionic_concentrations"/>
<map_variables variable_1="Ca_i" variable_2="Ca_i"/>
<map_variables variable_1="Na_i" variable_2="Na_i"/>
<map_variables variable_1="Ca_o" variable_2="Ca_o"/>
<map_variables variable_1="Na_o" variable_2="Na_o"/>
</connection>
<connection>
<map_components component_1="sodium_potassium_pump" component_2="ionic_concentrations"/>
<map_variables variable_1="Na_i" variable_2="Na_i"/>
<map_variables variable_1="K_o" variable_2="K_o"/>
</connection>
<connection>
<map_components component_1="reversal_and_equilibrium_potentials" component_2="ionic_concentrations"/>
<map_variables variable_1="K_o" variable_2="K_o"/>
<map_variables variable_1="Na_o" variable_2="Na_o"/>
<map_variables variable_1="K_i" variable_2="K_i"/>
<map_variables variable_1="Na_i" variable_2="Na_i"/>
<map_variables variable_1="Ca_o" variable_2="Ca_o"/>
<map_variables variable_1="Ca_i" variable_2="Ca_i"/>
</connection>
<connection>
<map_components component_1="persistent_calcium_current" component_2="ionic_concentrations"/>
<map_variables variable_1="Ca_i" variable_2="Ca_i"/>
</connection>
<connection>
<map_components component_1="sodium_current" component_2="sodium_current_m_gate"/>
<map_variables variable_1="Version" variable_2="Version"/>
<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="sodium_current" component_2="sodium_current_h_gate"/>
<map_variables variable_1="Version" variable_2="Version"/>
<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="L_type_Ca_channel" component_2="L_type_Ca_channel_d_gate"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="d_L" variable_2="d_L"/>
<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="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="f_L" variable_2="f_L"/>
<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_d_gate"/>
<map_variables variable_1="d_T" variable_2="d_T"/>
<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_f_gate"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="f_T" variable_2="f_T"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="four_AP_sensitive_currents" component_2="four_AP_sensitive_currents_q_gate"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="FCell" variable_2="FCell"/>
<map_variables variable_1="q" variable_2="q"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="four_AP_sensitive_currents" component_2="four_AP_sensitive_currents_r_gate"/>
<map_variables variable_1="Version" variable_2="Version"/>
<map_variables variable_1="r" variable_2="r"/>
<map_variables variable_1="time" variable_2="time"/>
<map_variables variable_1="V" variable_2="V"/>
</connection>
<connection>
<map_components component_1="rapid_delayed_rectifying_potassium_current" component_2="rapid_delayed_rectifying_potassium_current_P_af_gate"/>
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