TITLE persistent sodium current COMMENT Equations from Golomb D, Amitai Y (1997) Propagating neuronal discharges in neocortical slices: computational and experimental study. J Neurophys 78: 1199-1211. >< Time constants given at 36 degC. >< Written by Arthur Houweling. ENDCOMMENT NEURON { SUFFIX iNaP USEION na READ ena WRITE ina RANGE g, ina } UNITS { (S) = (siemens) (mA) = (milliamp) (mV) = (millivolt) } PARAMETER { g= 7e-5 (S/cm2) } ASSIGNED { v (mV) ena (mV) ina (mA/cm2) minf } BREAKPOINT { rates() ina= g* minf* (v- ena) } INITIAL { rates() } PROCEDURE rates() { UNITSOFF minf= 1/ (1+ exp(-(v+ 40)/ 5)) } UNITSON