. 2015 Aug 26;114(4):2472–2484. doi: 10.1152/jn.00471.2015

Table 2.

Functions for membrane currents of the cellular model

m_∞,i(V_m)

h_∞,_i(V_m)

τ_m_,_i(V_m)

τ_h_,_i(V_m)

I_Na

\frac{1}{1 + e^{\frac{V_{m} + 35.5}{- 5.29}}}

\frac{1}{1 + e^{\frac{V_{m} + 48.9}{5.18}}}

1.32 - \frac{1.26}{1 + e^{\frac{V_{m} + 120}{- 25.0}}}

\begin{array}{l} \frac{0.67}{1 + e^{\frac{V_{m} + 62.9}{- 10.0}}} \\ * (1.5 + \frac{1}{1 + e^{\frac{V_{m} + 34.9}{3.6}}}) \end{array}

I_K,DR

\frac{1}{1 + e^{\frac{V_{m} + 12.3}{- 11.8}}}

7.2 - \frac{6.4}{1 + e^{\frac{V_{m} + 28.3}{- 19.2}}}

I_Ca,T

\frac{1}{1 + e^{\frac{V_{m} + 57.1}{- 7.2}}}

\frac{1}{1 + e^{\frac{V_{m} + 82.1}{5.5}}}

43.4 - \frac{42.6}{1 + e^{\frac{V_{m} + 68.1}{- 20.5}}}

840 - \frac{718.4}{1 + e^{\frac{V_{m} + 55}{- 16.9}}}

I_H

\frac{1}{1 + e^{\frac{V_{m} + 80}{6}}}

272 + \frac{1499}{1 + e^{\frac{V_{m} + 42.2}{- 8.73}}}

Notation is explained in the text. All time constants are given in ms.