§3 Hodgkin–Huxley Model — Action Potential
Cm dV/dt = -gNam³h(V-ENa) - gKn⁴(V-EK) - gL(V-EL) + Iext
The Hodgkin–Huxley model describes action potential generation with four coupled ODEs. The sodium channel activation (m) and inactivation (h) gating variables, together with the potassium channel activation (n) gating variable, determine the membrane's excitability. Solved numerically with the RK4 method.
— ✦ —
Parameters
ms
µA/cm²
ms
ms
Key Features
| Parameter | Value |
|---|---|
| Resting potential | -65 mV |
| Firing threshold (numerical) | 0.0 mV |
| Na⁺ reversal potential | 55 mV |
| K⁺ reversal potential | -90 mV |
| Maximum g_Na | 120 mS/cm² |
| Maximum g_K | 36 mS/cm² |