//genesis - Purkinje cell version M9 genesis2.1 master script /* Copyright E. De Schutter (Caltech and BBF-UIA) */ /* This script simulates a Purkinje cell in vivo, receving asynchronous ** background inputs from parallel fibers (phertz sets mean frequency) ** and stellate cells (ihertz) */ /* Reference: ** E. De Schutter and J.M. Bower: An active membrane model of the ** cerebellar Purkinje cell: II. Simulation of synaptic responses. ** Journal of Neurophysiology 71: 401-419 (1994). ** http://www.bbf.uia.ac.be/TNB/TNB_pub7.html ** Recreate part of Fig. 7. ** See http://www.bbf.uia.ac.be/models/PM9.shtml for general model info. */ randseed 999 float phertz = 28 float ihertz = 1 str filename = "results/PurkM9_p" @ (phertz) @ "Hz_i" @ (ihertz) @ "Hz" echo file {filename} int i float t include defaults cellpath="/Purkinje" str hstr /********************************************************************* ** Active membrane lumped Purkinje cell model script (#2M9) ** E. De Schutter, Caltech 1991-1993 ** Uses the scripts: Purk_chan, Purk_icomp, Purk_const, Purk_syn *********************************************************************/ /* Purkinje cell constants */ include Purk_const.g EREST_ACT = -0.055 /* dendrite is depolaized by synaptic inputs */ /* special scripts to create the prototypes */ include Purk_chan include Purk_icomp include Purk_syn /* To ensure that all subsequent elements are made in the library */ ce /library /* These make the prototypes of channels and compartments that can be ** invoked in .p files */ make_Purkinje_chans make_Purkinje_syns // set the synaptic firing frequencies at the library level setfield /library/GABA frequency {ihertz} setfield /library/non_NMDA frequency {phertz} make_Purkinje_comps make_Purkinje_spines /* create the model and set up the run cell mode */ // read cell date from .p file and create hsolve element readcell Purk2M9s.p {cellpath} -hsolve /* Set the clocks */ for (i = 0; i <= 7; i = i + 1) setclock {i} {dt} end setclock 8 1.0e-4 setclock 9 1 /* Create the output element */ create asc_file /output/plot_out useclock /output/plot_out 9 // setup the hines solver ce {cellpath} /* chanmode 3 is most efficient, calcmode 0 is needed for backward ** compatibility (this version M9 of the Purkinje cell model only!) */ setfield comptmode 1 chanmode 3 calcmode 0 call . SETUP setmethod 11 /* Initialize output */ /* Output voltage from soma */ hstr={findsolvefield {cellpath} {cellpath}/soma Vm} addmsg {cellpath} /output/plot_out SAVE {hstr} setfield /output/plot_out filename {filename} initialize 1 append 1 leave_open 1 reset useclock /output/plot_out 9 /* disable output */ t = {rand 0.170 0.200} step {t} -time /* initial equilibration */ useclock /output/plot_out 8 /* enable output */ step 2.0 -time quit