create soma access soma membranecap = 1 /* specific membrane capacitance in uF cm^-2 */ membraneresist = 40000 /* specific membrane resistance in ohm cm^2 */ axialresist = 100 /* axial resistivity in ohm cm */ Vrest = -70 /* resting potential, mV */ ECA=60 Gbar=5 V05=-10 Z=10 objref gplot, vplot, vC,BOX proc load_cell() { // $s1 filename aspiny = 0 forall delete_section() xopen($s1) access soma forall { nseg*=5 insert pas insert Calcium gbar_Calcium=Gbar v12_Calcium=V05 vSlope_Calcium=Z tau_Calcium=3 e_pas = Vrest eca= ECA g_pas=1/membraneresist Ra=axialresist cm=membranecap } soma vC = new SEClamp(0.5) vC.amp1=-120 vC.dur1=15400 vC.amp2=0 vC.dur2=1000 vC.rs=1e-5 } proc DoIt(){ finitialize(Vrest) fcurrent() dt=100 for i=0,149 fadvance() dt=10 for i=0,39 fadvance() dt=0.1 for i=0,99 fadvance() dt=0.025 for j=0,49 for i=0,39 fadvance() BOX = new HBox() BOX.intercept(1) vplot = new PlotShape() vplot.variable("v") vplot.scale(-10,80) vplot.exec_menu("Show Diam") vplot.exec_menu("Shape Plot") gplot = new PlotShape() gplot.variable("gca_Calcium") gplot.scale(0,Gbar+0.5) gplot.exec_menu("Show Diam") gplot.exec_menu("Shape Plot") xpanel("Information") xlabel("The left graph displays the membrane potential") xlabel("in pseudo color in each compartment of the neuron while") xlabel("the right graph displays the activation of the") xlabel("voltage-gated conductance also in pseudo color.") xlabel("Change the value of the conductance density in ") xlabel("panel or cell type to observe the different decay.") xpanel() BOX.intercept(0) BOX.map() } proc fig1a() { load_cell("cells/A0606.hoc") DoIt() } proc fig1b() { load_cell("cells/C050800E2.hoc") DoIt() } proc fig1c() { load_cell("cells/C230998A-I3.hoc") DoIt() } proc fig1d() { load_cell("cells/j7_L4stellate.hoc") DoIt() } xpanel("Simulate") xvalue("Calcium conductance density", "Gbar") xbutton("1. L5 Pyramidal Neuron","fig1a()") xbutton("2. L4 interneuron","fig1b()") xbutton("3. L2/3 bipolar interneuron ","fig1c()") xbutton("4. L4 spiny stellate ","fig1d()") xpanel()