INDEPENDENT {t FROM 0 TO 1 WITH 1 (ms)} NEURON { POINT_PROCESS gap NONSPECIFIC_CURRENT i RANGE gg, i POINTER vgap } PARAMETER { v (millivolt) vgap (millivolt) gg = 5e-4 (micromho) } ASSIGNED { i (nanoamp) } BREAKPOINT { i = (v - vgap)*gg }