TITLE Anomalous rectifier current for RD Traub, J Neurophysiol 89:909921, 2003
COMMENT
Implemented by Maciej Lazarewicz 2003 (mlazarew@seas.upenn.edu)
ENDCOMMENT
INDEPENDENT { t FROM 0 TO 1 WITH 1 (ms) }
UNITS {
(mV) = (millivolt)
(mA) = (milliamp)
}
NEURON {
SUFFIX ar
NONSPECIFIC_CURRENT i
RANGE gbar, i
}
PARAMETER {
gbar = 0.0 (mho/cm2)
v (mV)
erev = 35 (mV)
}
ASSIGNED {
i (mA/cm2)
minf (1)
mtau (ms)
}
STATE {
m
}
BREAKPOINT {
SOLVE states METHOD cnexp
i = gbar * m * ( v  erev )
}
INITIAL {
settables(v)
m = minf
m = 0.25
}
DERIVATIVE states {
settables(v)
m' = ( minf  m ) / mtau
}
UNITSOFF
PROCEDURE settables(v) {
TABLE minf, mtau FROM 120 TO 40 WITH 641
minf = 1 / ( 1 + exp( ( v + 75 ) / 5.5 ) )
mtau = 1 / ( exp( 14.6  0.086 * v ) + exp( 1.87 + 0.07 * v ) )
}
UNITSON
