load_file("nrngui.hoc") cvode_active(1) Vrest = -61//-64 dt = 0.1//0.05 celsius = 35.0 freq=20 v_init = -80 numaxon=1 numsoma=1 numbasal=52 numapical=81 Rm = 25370 Cm = 1.41 RaAll= 150 AXONM = 5 gna = .0 gkdr = 0.0 KMULT = 0.0 gkm=0 gkd=0.0 gc=0 gcal=gc gcan=gc gcat=gc gKc=0 gahp=0 ghd=0.00001 tstop=650//500 xopen("geo-cell1zr.hoc") xopen("fixnseg.hoc") objref stim, time, y, y2, infile, ifile, currt, curr access soma soma { stim = new IClamp(0.5) stim.amp=2 stim.dur=400 stim.del=150 // 50 } forall {insert pas area(.5) e_pas=Vrest cm=Cm} forsec "dendrite" { insert ds insert hd insert na3 insert kdr insert kap insert cacum depth_cacum=diam/2 insert cal insert can insert cat insert cagk insert KahpM95 } forsec "soma" { insert ds insert hd insert na3 insert kdr insert kap insert km insert kd insert cacum depth_cacum=diam/2 insert cal insert can insert cat insert cagk insert KahpM95 } forsec "axon" { insert na3 insert kdr insert kap } // forall {v=Vrest e_pas=Vrest g_pas = 1/Rm Ra=RaAll cm=Cm ek=-90 ena=55} forall {e_pas=Vrest g_pas = 1/Rm Ra=RaAll cm=Cm ek=-90 ena=55} geom_nseg() distance() tot=0 forall {tot=tot+nseg} maxdist=0 forall for(x) {if (distance(x)>maxdist) {maxdist=distance(x)}} forsec "axon" Ra=RaAll/3 forall if(ismembrane("hd")) {ehd_hd=-30} load_file("ca3b-cell1zr.ses") proc init() { access soma forall { /*v=Vrest*/ e_pas=Vrest if (ismembrane("cal")) { gcalbar_cal=gc gcanbar_can=gc gcatbar_cat=gc gbar_cagk= gKc gbar_KahpM95 = gahp } } forsec "axon" { gbar_na3=gna*AXONM gkdrbar_kdr=gkdr gkabar_kap = KMULTP sh_kap=0 } forsec "soma" { ghdbar_hd=ghd gbar_na3=gna gkdrbar_kdr=gkdr gkabar_kap = KMULTP gbar_km= gkm gkdbar_kd = gkd } for i=0, numbasal-1 dendrite[i] { ghdbar_hd=ghd gbar_na3=gna gkdrbar_kdr=gkdr gkabar_kap=KMULTP } forsec "apical_dendrite" { ghdbar_hd=ghd gbar_na3=gna gkdrbar_kdr=gkdr gkabar_kap=KMULTP } finitialize(v) // fcurrent() //finitialize(v) // forall for(x) { //if (ismembrane("cal")) {e_pas(x)=v(x)+(i_hd(x)+ina(x)+ik(x)+ica(x))/g_pas(x) // } else { // e_pas(x)=v(x)+(ina(x)+ik(x))/g_pas(x) // } // } cvode.re_init() } proc fig9e() { ////////// Weakly-adapting cell gna = .022 gkdr = 0.01 KMULTP = 0.02 gkm=0 gkd=0.00055 gahp=0.0 gc=1.e-5 gcal=gc gcan=gc gcat=gc gKc=0 ghd=1e-5 Vrest=-60 stim.amp=0.583 run() } proc fig9b() { ////////// Burst-firing cell gna = .022 gkdr = 0.006 KMULTP = 0.023 gc=1.e-5 gKc=5e-5 gkm=0.019 gkd=0.0 gahp=0.0001 gcal=gc gcan=gc gcat=gc ghd=2e-5 stim.amp=1.53 run() } proc fig9c() { ////////// Adapting cell gna = .022 gkdr = 0.01 KMULTP = 0.02 gc=1.e-5 gKc=0 gkm=0.018 gkd=0.0 gahp=0.0 gcal=gc gcan=gc gcat=gc ghd=1e-5 stim.amp=1.37 run() } proc fig9d() { gna = .022 gkdr = 0.01 KMULT = 0.02 gc=1.e-5 gKc=0 gkm=0.0 gkd=0.0 gahp=0.0 gcal=gc gcan=gc gcat=gc stim.amp=0.58 run() }