Table 1.

Gating equations for active channel current

Channel	Gating equations
INa	gNam3h (Vm − ENa)
INaP	gNaPw (Vm − ENa)
IDR	gDRn4 (Vm − EK)
IA	gAab (Vm − EK)
IM	gMu2 (Vm − EK)
IL	gL (Vm − EL)

The gating equation for each active channel's current is implemented using the Hodgkin–Huxley formulism.