// Neuron.hoc creates a model Mauthner cell (M-cell) simplified with a single // cylindrical compartment shown in Materials and Methods. // specific resistance 1000 ohm*cm2, specific conductance 0.001 mho/cm2, 0.001*1E9 nS/cm2 // // Takaki Watanabe // wtakaki@m.u-tokyo.ac.jp create soma soma { nseg=1 cm=1 // 1.0 uF/cm2 = 0.01 pF/um2 diam=lstd L=lstd } proc totalcap(){ somaarea = totcap*1E-6/cm // convert 1pF to 1E-6 uF somaarea cm2 lstd = 1E4*sqrt(somaarea/PI) // 1cm to 1E4 um soma.L = int(lstd) soma.diam = int(lstd) } totalcap() func nstomho() { return (1E-9*$1/somaarea) // nS to mho/cm2 } proc capcalL(){ somaarea = PI*(1E-4*soma.L)*(1E-4*soma.diam) totcap = int(1E6*somaarea*cm) } proc capcalD(){ somaarea = PI*(1E-4*soma.L)*(1E-4*soma.diam) totcap = int(1E6*somaarea*cm) } proc insertoriginal(){ soma{ insert kht insert na insert ka insert leak insert kcnq insert kcna insert kcnab2 ek_kht = -90 ena_na=na2 soma.ena(0.5)=na2 ek_ka=-90 erev_leak = -85 } } proc uninsertall(){ soma{ uninsert kht uninsert na uninsert ka uninsert leak uninsert hh uninsert kcnq uninsert kcna uninsert kcnab2 } } access soma