Table 4.
Definition of model parameters that are randomly altered to introduce variability into the population of models.
| Model Parameters used in Sensitivity Analysis | ||
|---|---|---|
| G Na | Na+ current, maximum conductance | |
| G K1 | Inward rectifying K+ current, maximum conductance | |
| G Kur | Ultra-rapid rectifying K+ current, maximum conductance | |
| G KAch | Acetylcholine-sensitive K+ current, maximum conductance | |
| G to,f | Transient outward K+ current, fast component, maximum conductance | |
| CSQ | Calsequestrin expression | |
| V NaK | Na+/K+ ATPase current, maximum velocity | |
| G KCa | SK current, maximum conductance | |
| G NaL | Late Na+ current, maximum conductance | |
| G Kr | Rapid delayed rectifying K+ current, maximum conductance | |
| G Ks | Slow delayed rectifying K+ current, maximum conductance | |
| G K2P | K2P current, maximum conductance | |
| L-Type | K1o | L-type Ca2+ current inactivation rate constant |
| CaMKII-p | CaMKII-phosphorylation of L-type Ca2+ current | |
| G CaL | L-type Ca2+ current, maximum conductance | |
| V NCX | Na+/Ca2+ exchange current, maximum velocity | |
| Kmf | SERCA sensitivity to [Ca2+]Cyto | |
| RyR | EC50 | Concentration of Ca2+ that induces half maximum Po |
| V RyR | Ryanodine receptor flux, maximum velocity | |
| K leak | Ryanodine receptor Ca2+ leak, maximum velocity | |
| KoCa | Activation rate constant for RyR | |
| KiCa | Inactivation rate constant for RyR | |
| Kim | Transition rate constant for RyR | |
| Kom | Transition rate constant for RyR | |
| G CaB | Background Ca2+ current, maximum conductance | |
| G ClB | Background Cl− current, maximum conductance | |
| G ClCa | Ca2+-activated Cl− current, maximum conductance | |
| G NaB | Background Na+ current, maximum conductance | |
| G Kp | Plateau K+ current, maximum conductance | |
| V SERCA | Sarcoplasmic reticulum Ca2+ ATPase flux, maximum velocity | |
| V PMCA | Plasma membrane Ca2+ ATPase current, maximum velocity | |
| Ca2+ Buffer Cleft | Ca2+ buffering strength in the cleft space | |
| Ca2+ Buffer Cytosol | Ca2+ buffering strength in the cytosolic space | |