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