Table 1.

Voltage-dependent conductance parameters

Conductance state, variable nGmax (nS) Vrev (mV) α (msec−1) β (msec−1) τmin (msec)
gNa
Activation, m 3 7.5 exp [0.081 (V + 39)] 7.5 exp [−0.066 (V + 39)]
Inactivation, h 1 172 55 0.6 exp [−0.089 (V + 50)] 0.6 exp [0.089 (V + 50)] 0.045
gk−v
Activation, n 4 28 −90 0.85 exp [0.073 (V + 38)] 0.85 exp [−0.018 (V + 38)]
gCa
Activation, s 2 58 80 8/(1 + exp [−0.072 (V−5)]) 0.1 (V + 8.9)/(exp [0.2 (V + 8.9)] −1)
gK−Ca
Activation, a 1 56.5 −90 12.5/(1 + [0.15 exp (−0.085V)]/[Ca]) 7.5/(1 + [Ca]/[0.015 exp(−00077V)])