Table 2.
Summary of equations describing voltage-dependent properties of IK
| Parameters | ||||||
|---|---|---|---|---|---|---|
| Experiment | Figure | Equation | a | b | c | d |
| Inactivation recovery τfast (s) | 5Ba | 1/(a exp(bV) +cexp(dV)) | 43 | 0.04 | 3.5 × 10−4 | −0.1 |
| Inactivation recovery τslow (s) | 5Ba | 1/(a exp(bV) +cexp(dV)) | 10 | 0.09 | 0.0057 | −0.05 |
| Inactivation recovery (Ampfast/Ampslow) | 5Bb | aV + b | −0.015 | 0.2 | — | — |
| Time to peak (ms) | 9Aa | a/(1 + exp((b—V)/c)) + d | 100 | −0.4 | −19 | 16 |
| Decay τfast (ms) | 9Ab | aV + b | −0.001 | 0.5 | — | — |
| Decay τslow (ms) | 9Ab | aV + b | −0.0014 | 4.5 | — | — |
| Decay (Ampfast/Ampslow) | 9Ac | aV + b | −0.011 | 3.1 | — | — |
| Order (N) | 9Ad | a/(1 + exp((b–V)/c)) + d | 1.8 | −18 | −10 | 0.95 |
| τm (ms) | 10Ba | 1/(a exp(bV) +cexp(dV)) | 0.018 | −0.022 | 0.046 | 0.032 |
V is the membrane potential in mV.