/************************************************************ Christina Weaver August 2011 insert channels from Vetter et al (2001) into dlPFC cortical pyramidal neuron from J Luebke. Includes Mainen's synthetic axon (from the 1995 Mainen et al. paper). ************************************************************/ load_file("nrngui.hoc") // now load morph; recall that 'basic_shape()' resets the morphology load_file("Jul16IR3f_fromSWCthenManual_Nov22-11.hoc") load_file("aux_procs.hoc") {ncp = 0 forall ncp += nseg } printf("Before correction ncp = %d\n",ncp) xopen("electro_procs.hoc") V1_effective_ApicalSpineDensity = 0.67322181 // total of 1153 spines, divided by total apical length V1_effective_BasalSpineDensity = 0.4886992 // total of 874 spines, divided by total basal length applySubtreeConstantSpineDensity(apical, SurfaceAreaOneApicalSpine, V1_effective_ApicalSpineDensity) applySubtreeConstantSpineDensity(basal, SurfaceAreaOneBasalSpine, V1_effective_BasalSpineDensity) geom_nseg(100,0.1) {ncp = 0 forall ncp += nseg } printf("After correction ncp = %d\n",ncp) // Using SEClamp, as recommended on the NEURON User Forum. See init_PFC.hoc for details. load_file("rigPFCmod.ses") INITDUR = 80 //50 VO = -70 V0 = -70 //avoid ambiguity of "Capital O" vs "zero 0" //reduce soma size soma.L *= 0.66667 soma.diam *= 0.66667 set_epasNG(72) scale_gpas(4.8e-5) scaleNa(25,1e3) scaleKV(65,16.6667) // inject several levels of current injection, and record the firing rates that come out. load_file("custominit.hoc") load_file("batchrun.hoc") tstop = 1200 dt=0.05 steps_per_ms = 20 forall { if( ismembrane("na") ) vshift_na=-10.5 } for( iVal=.03; iVal<=.28; iVal = iVal+.05) { run_1Step(200,700,iVal) }