Ca+/HCN channel-dependent persistent activity in multiscale model of neocortex (Neymotin et al 2016)

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Accession:185858
"Neuronal persistent activity has been primarily assessed in terms of electrical mechanisms, without attention to the complex array of molecular events that also control cell excitability. We developed a multiscale neocortical model proceeding from the molecular to the network level to assess the contributions of calcium regulation of hyperpolarization-activated cyclic nucleotide-gated (HCN) channels in providing additional and complementary support of continuing activation in the network. ..."
Reference:
1 . Neymotin SA, McDougal RA, Bulanova AS, Zeki M, Lakatos P, Terman D, Hines ML, Lytton WW (2016) Calcium regulation of HCN channels supports persistent activity in a multiscale model of neocortex Neuroscience 316:344-366 [PubMed]
Model Information (Click on a link to find other models with that property)
Model Type: Realistic Network; Neuron or other electrically excitable cell; Synapse; Channel/Receptor; Molecular Network;
Brain Region(s)/Organism: Neocortex;
Cell Type(s): Neocortex V1 pyramidal corticothalamic L6 cell; Neocortex V1 pyramidal intratelencephalic L2-5 cell; Neocortex V1 interneuron basket PV cell; Neocortex fast spiking (FS) interneuron; Neocortex spiking regular (RS) neuron; Neocortex spiking low threshold (LTS) neuron; Neocortex layer 2-3 interneuron; Neocortex layer 5 interneuron; Neocortex layer 6a interneuron;
Channel(s): I Na,t; I L high threshold; I T low threshold; I A; I K; I M; I h; I K,Ca; I CAN; I Calcium; I_AHP; I_KD; Ca pump;
Gap Junctions:
Receptor(s): mGluR1; GabaA; GabaB; AMPA; NMDA; mGluR; Glutamate; Gaba; IP3;
Gene(s):
Transmitter(s): Gaba; Glutamate;
Simulation Environment: NEURON;
Model Concept(s): Activity Patterns; Ion Channel Kinetics; Oscillations; Spatio-temporal Activity Patterns; Signaling pathways; Working memory; Attractor Neural Network; Calcium dynamics; Laminar Connectivity; G-protein coupled; Rebound firing; Brain Rhythms; Dendritic Bistability; Reaction-diffusion; Beta oscillations; Persistent activity; Multiscale;
Implementer(s): Neymotin, Sam [samn at neurosim.downstate.edu]; McDougal, Robert [robert.mcdougal at yale.edu];
Search NeuronDB for information about:  Neocortex V1 pyramidal corticothalamic L6 cell; Neocortex V1 pyramidal intratelencephalic L2-5 cell; Neocortex V1 interneuron basket PV cell; mGluR1; GabaA; GabaB; AMPA; NMDA; mGluR; Glutamate; Gaba; IP3; I Na,t; I L high threshold; I T low threshold; I A; I K; I M; I h; I K,Ca; I CAN; I Calcium; I_AHP; I_KD; Ca pump; Gaba; Glutamate;
  
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CaHDemo
readme.txt
cagk.mod
cal.mod *
calts.mod *
can.mod *
cat.mod *
gabab.mod
IC.mod *
icalts.mod *
Ih.mod
ihlts.mod *
IKM.mod *
kap.mod
kcalts.mod *
kdmc.mod
kdr.mod
kdrbwb.mod
km.mod *
mglur.mod *
misc.mod *
MyExp2SynBB.mod *
MyExp2SynNMDABB.mod
nafbwb.mod
nax.mod
stats.mod *
vecst.mod *
aux_fun.inc *
conf.py
declist.hoc *
decnqs.hoc *
decvec.hoc *
default.hoc *
drline.hoc *
geom.py
ghk.inc *
grvec.hoc *
init.hoc
labels.hoc
labels.py *
local.hoc *
misc.h *
mpisim.py
netcfg.cfg
nqs.hoc
nqs.py
nrnoc.hoc *
onepyr.cfg
onepyr.py
pyinit.py *
python.hoc *
pywrap.hoc *
simctrl.hoc *
simdat.py
syncode.hoc *
xgetargs.hoc *
                            
//  $Header: /usr/site/nrniv/simctrl/hoc/RCS/local.hoc,v 1.15 2003/02/13 15:32:06 billl Exp $
//
//  This file contains local modifications to nrnoc.hoc and default.hoc
//
//  Users should not edit nrnoc.hoc or default.hoc.  Any local 
//  changes to these files should be made in this file.

// ------------------------------------------------------------
//* MODIFICATIONS TO NRNOC.HOC
// The procedures declared here will overwrite any duplicate
// procedures in nrnoc.hoc.
// ------------------------------------------------------------

//*MODIFICATIONS TO DEFAULT.HOC
//
// Vars added here may not be handled properly within nrnoc.hoc
//------------------------------------------------------------

//** String defaults

//** Simulation defaults

long_dt     = .001      // msec 

objref sfunc,tmpfile
sfunc = hoc_sf_   // needed to use is_name()
tmpfile = new File()  // check for existence before opening a user's local.hoc file

proc write_comment () {
  tmpfile.aopen("index")
  tmpfile.printf("%s\n",$s1)
  tmpfile.close()  
}

func asin () { return atan($1/sqrt(1-$1*$1)) }
func acos () { return atan(sqrt(1-$1*$1)/$1) }

objref mt[2]
mt = new MechanismType(0)
proc uninsert_all () { local ii
  forall for ii=0,mt.count()-1 {
    mt.select(ii)
    mt.selected(temp_string_)
    if (strcmp(temp_string_,"morphology")==0) continue
    if (strcmp(temp_string_,"capacitance")==0) continue
    if (strcmp(temp_string_,"extracellular")==0) continue
    if (sfunc.substr(temp_string_,"_ion")!=-1) continue
    mt.remove()
    // print ii,temp_string_
  }
}

condor_run = 0  // define for compatability

Neymotin SA, McDougal RA, Bulanova AS, Zeki M, Lakatos P, Terman D, Hines ML, Lytton WW (2016) Calcium regulation of HCN channels supports persistent activity in a multiscale model of neocortex Neuroscience 316:344-366[PubMed]

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