Thalamic quiescence of spike and wave seizures (Lytton et al 1997)

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Accession:9889
A phase plane analysis of a two cell interaction between a thalamocortical neuron (TC) and a thalamic reticularis neuron (RE).
Reference:
1 . Lytton WW, Contreras D, Destexhe A, Steriade M (1997) Dynamic interactions determine partial thalamic quiescence in a computer network model of spike-and-wave seizures. J Neurophysiol 77:1679-96 [PubMed]
Model Information (Click on a link to find other models with that property)
Model Type: Realistic Network;
Brain Region(s)/Organism: Thalamus;
Cell Type(s): Thalamus geniculate nucleus (lateral) principal neuron; Thalamus reticular nucleus cell;
Channel(s): I T low threshold;
Gap Junctions:
Receptor(s): GabaA; Glutamate;
Gene(s):
Transmitter(s): Gaba; Glutamate;
Simulation Environment: NEURON;
Model Concept(s): Temporal Pattern Generation; Oscillations; Calcium dynamics;
Implementer(s): Lytton, William [billl at neurosim.downstate.edu]; Destexhe, Alain [Destexhe at iaf.cnrs-gif.fr];
Search NeuronDB for information about:  Thalamus geniculate nucleus (lateral) principal neuron; Thalamus reticular nucleus cell; GabaA; Glutamate; I T low threshold; Gaba; Glutamate;
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lytton97
README
AMPA.mod
calciumpump_destexhe.mod *
GABAB1.mod
GABALOW.mod
gen.mod
HH_traub.mod *
IAHP_destexhe.mod
ICAN_destexhe.mod
Ih_old.mod *
IT_wang.mod
IT2_huguenard.mod
nmda.mod
passiv.mod
presyn.mod *
pulse.mod *
rand.mod
boxes.hoc *
declist.hoc *
decvec.hoc *
default.hoc *
directory
fig7.gif
geom.hoc
grvec.hoc
init.hoc
jnphys77_1679.pdf
local.hoc *
mosinit.hoc
network.hoc
nrnoc.hoc *
params.hoc
presyn.inc *
queue.inc *
run.hoc
simctrl.hoc *
snshead.inc *
synq.inc *
xtmp
                            
// $Id: declist.hoc,v 1.17 1999/09/16 22:15:10 billl Exp $

proc declist() {}

//* Declarations

begintemplate String2
public s,t
strdef s,t
proc init() {
  if (numarg() == 1) { s=$s1 }
  if (numarg() == 2) { s=$s1 t=$s2 }
}
endtemplate String2

strdef mechnames
objref tmplist,tmplist2
tmplist = new List()

//* list iterator ltr
// usage 'for ltr(XO, tmplist) { print XO }'
iterator ltr() { local i
  if (numarg()==3) {$&3=0} else {i1 = 0}
  for i = 0, $o2.count() - 1 {
    $o1 = $o2.object(i)
    iterator_statement
    if (numarg()==3) { $&3+=1 } else { i1+=1 }
  }
  $o1 = nil
}

//* list iterator ltr2
// usage 'for ltr2(XO, YO, list1, list2) { print XO,YO }'
iterator ltr2() { local i
  if (numarg()==5) {$&5=0} else {i1 = 0}
  if ($o3.count != $o4.count) { print "ltr2 ERROR: lists have different lengths" return }
  for i = 0, $o3.count() - 1 {
    $o1 = $o3.object(i)
    $o2 = $o4.object(i)
    iterator_statement
    if (numarg()==5) { $&5+=1 } else { i1+=1 }
  }
  $o1=nil $o2=nil
}

//* list pairwise iterator ltrp
// usage 'for ltrp(XO, YO, list) { print XO,YO }' takes them pairwise
iterator ltrp() { local i
  if (numarg()==4) {$&4=0} else {i1 = 0}
  for (i=0;i<$o3.count()-1;i+=2) {
    $o1 = $o3.object(i) $o2 = $o3.object(i+1)
    iterator_statement
    if (numarg()==4) { $&4+=1 } else { i1+=1 }
  }
  $o1=nil $o2=nil
}

//* list iterator sltr
// usage 'for sltr(XO, string) { print XO }'
iterator sltr() { local i
  tmplist = new List($s2)
  if (numarg()==3) {$&3=0} else {i1=0}
  for i = 0, tmplist.count() - 1 {
    $o1 = tmplist.object(i)
    iterator_statement
    if (numarg()==3) { $&3+=1 } else { i1+=1 }
  }
  $o1 = nil
}

//* listedit() allows you to remove things by clicking
proc listedit () {
  if (numarg()==0) { print "listedit(list,str) gives browser(list,str) for removing items" return}
  if (numarg()==1) {
  if (! isstring($o1.object(0),temp_string_)) {print "Give name for string of object?" return }
    sprint(temp_string_,"proc ledt1 () {sprint(temp_string_,%s,hoc_ac_,%s.object(hoc_ac_).%s)}","\"%d:%s\"",$o1,"s")
  } else {
    sprint(temp_string_,"proc ledt1 () {sprint(temp_string_,%s,hoc_ac_,%s.object(hoc_ac_).%s)}","\"%d:%s\"",$o1,$s2)
  }
  execute1(temp_string_)
  $o1.browser("Double click on item to remove",temp_string_,"ledt1()")
  sprint(temp_string_,"%s.remove(hoc_ac_)",$o1)
  $o1.accept_action(temp_string_)
}


//* listXO() connects stuff to XO from a list
proc listXO () {
  if (numarg()==1) {
    $o1.browser("Double click")
    sprint(temp_string_,"print hoc_ac_,\":XO -> \",%s.object(hoc_ac_) XO = %s.object(hoc_ac_)",$o1,$o1)
    $o1.accept_action(temp_string_)
  } else if (numarg()==2) {
    $o1.browser($s2)
    sprint(temp_string_,"XO = %s.object(hoc_ac_) print %s.object(hoc_ac_).%s",$o1,$o1,$s2)
    $o1.accept_action(temp_string_)
  } else if (numarg()==3) {
    $o1.browser($s2)
    sprint(temp_string_,"XO = %s.object(hoc_ac_) print %s.object(hoc_ac_).%s,%s.object(hoc_ac_).%s",$o1,$o1,$s2,$o1,$s3)
    $o1.accept_action(temp_string_)
  }
}

//* lcatstr(list,s1,s2,...) make new List("s1") new List("s2") ... in one list
proc lcatstr() { local i
  if (numarg()<3) { print "lcatstr(l1,s1,s2,...) puts new Lists into l1" return }
  $o1 = new List($s2)
  for i=3,numarg() {
    tmplist2 = new List($si)
    for ltr(XO,tmplist2) { $o1.append(XO) }  
  }
}

//* sublist() places a sublist in LIST0 from LIST1 index BEGIN to END inclusive
proc sublist () { local ii
  $o1.remove_all
  for ii=$3,$4 {
    $o1.append($o2.object(ii))
  }
}

//* catlist() concats LIST2...LISTN on end of LIST1
proc catlist () { local i
  for i = 2, numarg() {
    for ltr(YO,$oi) {
      $o1.append(YO)
    }
  }
}  

//* mechlist() creates a LIST of all this CELL type's TEMPLATE type
// list, cell, template
// make a list of mechanisms belonging to a certain template
proc mechlist () { local num,ii
//  mechnames = ""  // not a good storage since runs out of room
  if (numarg()==0) { print "mechlist(list, cell, template)" return}
  $o1 = new List($s2)
  num = $o1.count
  for ii=0,num-1 {
    sprint(temp_string_,"%s.append(%s.%s)",$o1,$o1.object(ii),$s3)
    execute(temp_string_)
    sprint(mechnames,"%s/%d/%s.%s",mechnames,ii,$o1.object(ii),$s3)
  }
  for (ii=num-1;ii>=0;ii=ii-1) { $o1.remove(ii) }
}

//* lp() loop through a list running command in object's context
// assumes list in tmplist
// with 1 args run $o1.object().obj_elem
// with 2 args run comm($o1.object().obj_elem)
proc lp () {
  for ii=0,tmplist.count-1 {
    printf("%s ",tmplist.object(ii))
    if (numarg()==2) {
      sprint(temp_string_,"%s(%s.%s)",$s2,tmplist.object(ii),$s1)
    } else {
      sprint(temp_string_,"%s.%s",tmplist.object(ii),$s1)
    }
    execute(temp_string_)
  }
}

//* prlp() loop through a list printing object name and result of command
proc prlp () {
  for ii=0,tmplist.count-1 {
    printf("%s ",tmplist.object(ii))
    if (numarg()==1) {
      sprint(temp_string_,"print %s.%s",tmplist.object(ii),$s1)
      execute(temp_string_)
    } else { print "" }
  }
}

//** repl_str(str,stra,strb,scratch): replace stra with strb in string
// will only replace first string match
proc repl_str() {
  if (sfunc.substr($s1,$s2) == -1) { print $s2," not in ",$s1  return }
  sfunc.tail($s1,$s2,$s4)
  sprint($s4,"%s%s",$s3,$s4)
  sfunc.head($s1,$s2,$s1)
  sprint($s1,"%s%s",$s1,$s4)
}


Lytton WW, Contreras D, Destexhe A, Steriade M (1997) Dynamic interactions determine partial thalamic quiescence in a computer network model of spike-and-wave seizures. J Neurophysiol 77:1679-96[PubMed]

References and models cited by this paper

References and models that cite this paper

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