/* In this experiment we want to fit our model to recorded NMDA current
during oscilating patterns of membrane voltage which include some action potentials
*/
load_file("nrngui.hoc")
load_file("params.hoc")
//fully activates cache efficiency
cvode.cache_efficient(1)
tstop = 20.8379
dt = .025
celsius = 18 //room temperature in Clarke08 experiment = ?
v_init = -65
// ------------------
create soma
access soma
// load data
//------------Action Potential Clamp---------------------------
objref vc, vRec, tRec, vFile, tFile
vRec = new Vector(570)
tRec = new Vector(570)
vFile = new File()
tFile = new File()
vFile.ropen("./Data/Exp10-Clarke08-Fig10/vNaSpike.dat")
tFile.ropen("./Data/Exp10-Clarke08-Fig10/tNaSpike.dat")
vRec.scanf(vFile)
tRec.scanf(tFile)
// vRec.printf()
vc = new VClamp(.5)
vc.dur[0] = tstop
vRec.play(&vc.amp[0],tRec)
//---------------------------------------------------
objref sNMDA, stim, nc
stim = new NetStim(.5)
stim.interval = 1 //ms (mean) time between spikes
stim.number = 1 //(average) number of spikes
stim.start = 1.534 - 1 //ms (most likely) start time of first spike
stim.noise = 0 //---- range 0 to 1. Fractional randomness.
//0 deterministic, 1 intervals have negexp distribution.
//{sNMDA = new NMDA10_1(.5) SynWeight = 0.39071} // Kampa et al, 2004 model
//{sNMDA = new NMDA10_2_2(.5) SynWeight = 0.49707} // Vargas-Caballero & Robinson, 2004 model
{sNMDA = new NMDA16_2(.5) SynWeight = 0.056526} // Clarke & Johnson, 2008
nc = new NetCon(stim, sNMDA)
proc init_NMDA() {
nc.weight = SynWeight
nc.delay = 1
}
objref FinNMDA
FinNMDA = new FInitializeHandler(3,"init_NMDA()")
//-------Graph----------------------
objref iNMDA, vSoma
iNMDA = new Graph()
iNMDA.size(0,tstop,-8,25)
iNMDA.addvar("sNMDA.i",3,0)
iNMDA.save_name("graphList[0].")
graphList[0].append(iNMDA)
vSoma = new Graph()
vSoma.size(0,tstop,-100,50)
vSoma.addvar("soma.v(.5)",3,0)
vSoma.save_name("graphList[0].")
graphList[0].append(vSoma)
//------Save Simulated NMDA Current
objref iNMDA, iFile, time, tFile
iNMDA = new Vector()
iNMDA.record(&sNMDA.i)
iFile = new File("iFile.dat")
iFile.wopen("iFile.dat")
time = new Vector()
time.record(&t)
tFile = new File("tFile.dat")
tFile.wopen("tFile.dat")
init()
run()
iNMDA.printf(iFile)
iFile.close()
time.printf(tFile)
tFile.close()