Rendering of the source text

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    <unit units="kelvin"/>
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    <unit units="mM"/>
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    <unit exponent="-1" units="mV"/>
    <unit exponent="-1" units="ms"/>
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    <unit prefix="milli" units="siemens"/>
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  <component cmeta:id="stimulus_protocol" name="stimulus_protocol">
    <variable name="IStim" initial_value="0.0" public_interface="out" units="uA_per_mmsq"/>
    <variable name="time" public_interface="in" units="ms"/>
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    <variable initial_value="0.0" name="g_K_add" public_interface="out" units="mS_per_mmsq"/>
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  <component cmeta:id="interface" name="model">
    <variable name="time" private_interface="out" public_interface="in" units="ms"/>
    <variable name="I_stim" private_interface="out" public_interface="in" units="uA_per_mm2"/>
    <variable name="g_K_add" private_interface="out" public_interface="in" units="mS_per_mm2"/>
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    <variable initial_value="0.12" name="Cm" units="uF_per_mm2"/>
    <variable name="time" public_interface="in" units="ms"/>
    <variable name="i_Na" public_interface="in" units="uA_per_mm2"/>
    <variable name="i_K" public_interface="in" units="uA_per_mm2"/>
    <variable name="i_Leak" public_interface="in" units="uA_per_mm2"/>
    <variable name="I_stim" public_interface="in" units="uA_per_mm2"/>
    <variable name="IStimC" public_interface="out" units="uA_per_mm2"/>
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        <ci>IStimC</ci>
        <ci>I_stim</ci>
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    <variable name="i_Na" public_interface="out" units="uA_per_mm2"/>
    <variable initial_value="4.0" name="g_Na_max" units="mS_per_mm2"/>
    <variable name="g_Na" units="mS_per_mm2"/>
    <variable initial_value="40.0" name="E_Na" units="mV"/>
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    <variable name="V" private_interface="out" public_interface="in" units="mV"/>
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          <ci> h </ci>
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              <ci> h </ci>
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            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mS_per_mm2">0.14e-2</cn>
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          <apply>
            <minus/>
            <ci> V </ci>
            <ci> E_Na </ci>
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        </apply>
      </apply>
    </math>
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  <component cmeta:id="sodium_channel_m_gate" name="sodium_channel_m_gate">
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    <variable name="alpha_m" units="per_ms"/>
    <variable name="beta_m" units="per_ms"/>
    <variable name="V" public_interface="in" units="mV"/>
    <variable name="time" public_interface="in" units="ms"/>
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            <times/>
            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_mV_ms"> 0.1 </cn>
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              <apply>
                <minus/>
                <ci> V </ci>
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                <apply>
                  <minus/>
                  <apply>
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                    <ci> V </ci>
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                  <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 48.0 </cn>
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                <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 15.0 </cn>
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          <divide/>
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            <times/>
            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_mV_ms"> 0.12 </cn>
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              <plus/>
              <ci> V </ci>
              <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 8.0 </cn>
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                  <plus/>
                  <ci> V </ci>
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                <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 5.0 </cn>
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            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless"> 1.0 </cn>
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            <ci> time </ci>
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          <ci> m </ci>
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          <minus/>
          <apply>
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            <ci> alpha_m </ci>
            <apply>
              <minus/>
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              <ci> m </ci>
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          <apply>
            <times/>
            <ci> beta_m </ci>
            <ci> m </ci>
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        </apply>
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    </math>
  </component>
  <component cmeta:id="sodium_channel_h_gate" name="sodium_channel_h_gate">
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    <variable name="alpha_h" units="per_ms"/>
    <variable name="beta_h" units="per_ms"/>
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    <variable name="time" public_interface="in" units="ms"/>
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        <eq/>
        <ci> alpha_h </ci>
        <apply>
          <times/>
          <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms"> 0.17 </cn>
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              <divide/>
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                <minus/>
                <apply>
                  <minus/>
                  <ci> V </ci>
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                <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 90.0 </cn>
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              <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 20.0 </cn>
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    <math xmlns="http://www.w3.org/1998/Math/MathML" cmeta:id="beta_h_calculation_eq">
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        <ci> beta_h </ci>
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          <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms"> 1.0 </cn>
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                  <minus/>
                  <apply>
                    <minus/>
                    <ci> V </ci>
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                  <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 42.0 </cn>
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                <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 10.0 </cn>
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          <ci> h </ci>
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            <ci> alpha_h </ci>
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              <ci> h </ci>
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          <apply>
            <times/>
            <ci> beta_h </ci>
            <ci> h </ci>
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      </apply>
    </math>
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    <variable name="i_K" public_interface="out" units="uA_per_mm2"/>
    <variable name="g_K1" units="mS_per_mm2"/>
    <variable name="g_K2" units="mS_per_mm2"/>
    <variable name="g_K_add" public_interface="in" units="mS_per_mm2"/>
    <variable name="time" private_interface="out" public_interface="in" units="ms"/>
    <variable name="V" private_interface="out" public_interface="in" units="mV"/>
    <variable name="n" private_interface="in" units="dimensionless"/>
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        <ci> i_K </ci>
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          <times/>
          <apply>
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            <ci> g_K1 </ci>
            <ci> g_K2 </ci>
            <ci> g_K_add </ci>
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          <apply>
            <plus/>
            <ci> V </ci>
            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 100.0 </cn>
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    <math xmlns="http://www.w3.org/1998/Math/MathML" cmeta:id="g_K1_calculation_eq">
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        <eq/>
        <ci> g_K1 </ci>
        <apply>
          <plus/>
          <apply>
            <times/>
            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mS_per_mm2"> 1.2e-2 </cn>
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              <exp/>
              <apply>
                <divide/>
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                  <minus/>
                  <apply>
                    <minus/>
                    <ci> V </ci>
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                  <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 90.0 </cn>
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                <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 50.0 </cn>
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            </apply>
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          <apply>
            <times/>
            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mS_per_mm2"> 0.015e-2 </cn>
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              <exp/>
              <apply>
                <divide/>
                <apply>
                  <plus/>
                  <ci> V </ci>
                  <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 90.0 </cn>
                </apply>
                <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 60.0 </cn>
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            </apply>
          </apply>
        </apply>
      </apply>
    </math>
    <math xmlns="http://www.w3.org/1998/Math/MathML" cmeta:id="g_K2_calculation_eq">
      <apply id="g_K2_calculation">
        <eq/>
        <ci> g_K2 </ci>
        <apply>
          <times/>
          <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mS_per_mm2"> 1.2e-2 </cn>
          <apply>
            <power/>
            <ci> n </ci>
            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless"> 4.0 </cn>
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        </apply>
      </apply>
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  <component cmeta:id="potassium_channel_n_gate" name="potassium_channel_n_gate">
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    <variable name="alpha_n" units="per_ms"/>
    <variable name="beta_n" units="per_ms"/>
    <variable name="V" public_interface="in" units="mV"/>
    <variable name="time" public_interface="in" units="ms"/>
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          <divide/>
          <apply>
            <times/>
            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_mV_ms"> 0.0001 </cn>
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              <minus/>
              <apply>
                <minus/>
                <ci> V </ci>
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              <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 50.0 </cn>
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            <apply>
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              <apply>
                <divide/>
                <apply>
                  <minus/>
                  <apply>
                    <minus/>
                    <ci> V </ci>
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                  <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 50.0 </cn>
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                <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 10.0 </cn>
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            <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless"> 1.0 </cn>
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    <math xmlns="http://www.w3.org/1998/Math/MathML" cmeta:id="beta_n_calculation_eq">
      <apply id="beta_n_calculation">
        <eq/>
        <ci> beta_n </ci>
        <apply>
          <times/>
          <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="per_ms"> 0.002 </cn>
          <apply>
            <exp/>
            <apply>
              <divide/>
              <apply>
                <minus/>
                <apply>
                  <minus/>
                  <ci> V </ci>
                </apply>
                <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 90.0 </cn>
              </apply>
              <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="mV"> 80.0 </cn>
            </apply>
          </apply>
        </apply>
      </apply>
    </math>
    <math xmlns="http://www.w3.org/1998/Math/MathML" cmeta:id="dn_dt_eq">
      <apply id="dn_dt">
        <eq/>
        <apply>
          <diff/>
          <bvar>
            <ci> time </ci>
          </bvar>
          <ci> n </ci>
        </apply>
        <apply>
          <minus/>
          <apply>
            <times/>
            <ci> alpha_n </ci>
            <apply>
              <minus/>
              <cn xmlns:cellml="http://www.cellml.org/cellml/1.0#" cellml:units="dimensionless"> 1.0 </cn>
              <ci> n </ci>
            </apply>
          </apply>
          <apply>
            <times/>
            <ci> beta_n </ci>
            <ci> n </ci>
          </apply>
        </apply>
      </apply>
    </math>
  </component>
  <component cmeta:id="leakage_current" name="leakage_current">
    <variable name="i_Leak" public_interface="out" units="uA_per_mm2"/>
    <variable initial_value="0.0" name="g_L" units="mS_per_mm2"/>
    <variable initial_value="-60.0" name="E_L" units="mV"/>
    <variable name="time" public_interface="in" units="ms"/>
    <variable name="V" public_interface="in" units="mV"/>
    <math xmlns="http://www.w3.org/1998/Math/MathML">
      <apply id="i_Leak_calculation">
        <eq/>
        <ci> i_Leak </ci>
        <apply>
          <times/>
          <ci> g_L </ci>
          <apply>
            <minus/>
            <ci> V </ci>
            <ci> E_L </ci>
          </apply>
        </apply>
      </apply>
    </math>
  </component>
  <connection>
    <map_components component_1="model" component_2="time"/>
    <map_variables variable_1="time" variable_2="time"/>
  </connection>
  <connection>
    <map_components component_1="model" component_2="stimulus_protocol"/>
    <map_variables variable_1="I_stim" variable_2="IStim"/>
  </connection>
  <connection>
    <map_components component_1="time" component_2="stimulus_protocol"/>
    <map_variables variable_1="time" variable_2="time"/>
  </connection>
  <connection>
    <map_components component_1="model" component_2="parameters"/>
    <map_variables variable_1="g_K_add" variable_2="g_K_add"/>
  </connection>
  <connection>
    <map_components component_1="membrane" component_2="model"/>
    <map_variables variable_1="time" variable_2="time"/>
    <map_variables variable_1="I_stim" variable_2="I_stim"/>
  </connection>
  <connection>
    <map_components component_1="sodium_channel" component_2="model"/>
    <map_variables variable_1="time" variable_2="time"/>
  </connection>
  <connection>
    <map_components component_1="potassium_channel" component_2="model"/>
    <map_variables variable_1="time" variable_2="time"/>
    <map_variables variable_1="g_K_add" variable_2="g_K_add"/>
  </connection>
  <connection>
    <map_components component_1="leakage_current" component_2="model"/>
    <map_variables variable_1="time" variable_2="time"/>
  </connection>
  <connection>
    <map_components component_1="membrane" component_2="sodium_channel"/>
    <map_variables variable_1="V" variable_2="V"/>
    <map_variables variable_1="i_Na" variable_2="i_Na"/>
  </connection>
  <connection>
    <map_components component_1="membrane" component_2="potassium_channel"/>
    <map_variables variable_1="V" variable_2="V"/>
    <map_variables variable_1="i_K" variable_2="i_K"/>
  </connection>
  <connection>
    <map_components component_1="membrane" component_2="leakage_current"/>
    <map_variables variable_1="V" variable_2="V"/>
    <map_variables variable_1="i_Leak" variable_2="i_Leak"/>
  </connection>
  <connection>
    <map_components component_1="sodium_channel" component_2="sodium_channel_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="sodium_channel" component_2="sodium_channel_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="potassium_channel" component_2="potassium_channel_n_gate"/>
    <map_variables variable_1="n" variable_2="n"/>
    <map_variables variable_1="time" variable_2="time"/>
    <map_variables variable_1="V" variable_2="V"/>
  </connection>
  <group>
    <relationship_ref relationship="encapsulation"/>
    <component_ref component="model">
      <component_ref component="membrane"/>
      <component_ref component="sodium_channel">
        <component_ref component="sodium_channel_m_gate"/>
        <component_ref component="sodium_channel_h_gate"/>
      </component_ref>
      <component_ref component="potassium_channel">
        <component_ref component="potassium_channel_n_gate"/>
      </component_ref>
      <component_ref component="leakage_current"/>
    </component_ref>
  </group>
</model>