COMMENT //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% // // NOTICE OF COPYRIGHT AND OWNERSHIP OF SOFTWARE // // Copyright 2007, The University Of Pennsylvania // School of Engineering & Applied Science. // All rights reserved. // For research use only; commercial use prohibited. // Distribution without permission of Maciej T. Lazarewicz not permitted. // mlazarew@seas.upenn.edu // //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ENDCOMMENT NEURON { SUFFIX Iholmw NONSPECIFIC_CURRENT i } UNITS { (mA) = (milliamp) (mV) = (millivolt) (mS) = (millisiemens) } PARAMETER { gh = 0.15 (mS/cm2) eh = -40 (mV) } ASSIGNED { v (mV) i (mA/cm2) } STATE { q } INITIAL { q = qinf(v) } BREAKPOINT { SOLVE states METHOD cnexp i = (1e-3) * gh * q * (v-eh) } DERIVATIVE states { q' = (qinf(v)-q)/qtau(v) } FUNCTION qinf(v(mV)) { qinf = fun2(v, -80, 1, 10)*1(ms) } FUNCTION qtau(v(mV))(ms) { qtau = 200(ms)/(exp((v+70(mV))/20(mV))+exp(-(v+70(mV))/20(mV))) + 5(ms) } INCLUDE "aux_fun.inc"