The origin of different spike and wave-like events (Hall et al 2017)

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Accession:235561
Acute In vitro models have revealed a great deal of information about mechanisms underlying many types of epileptiform activity. However, few examples exist that shed light on spike and wave (SpW) patterns of pathological activity. SpW are seen in many epilepsy syndromes, both generalised and focal, and manifest across the entire age spectrum. They are heterogeneous in terms of their severity, symptom burden and apparent anatomical origin (thalamic, neocortical or both), but any relationship between this heterogeneity and underlying pathology remains elusive. Here we demonstrate that physiological delta frequency rhythms act as an effective substrate to permit modelling of SpW of cortical origin and may help to address this issue. ..."
Reference:
1 . Hall SP, Traub RD, Adams NE, Cunningham MO, Schofield I, Jenkins AJ, Whittington MA (2018) Enhanced interlaminar excitation or reduced superficial layer inhibition in neocortex generates different spike-and-wave-like electrographic events in vitro. J Neurophysiol 119:49-61 [PubMed]
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Model Information (Click on a link to find other models with that property)
Model Type: Realistic Network;
Brain Region(s)/Organism: Neocortex; Thalamus;
Cell Type(s): Thalamus geniculate nucleus/lateral principal GLU cell; Thalamus reticular nucleus GABA cell; Neocortex U1 L6 pyramidal corticalthalamic GLU cell; Neocortex U1 L2/6 pyramidal intratelencephalic GLU cell; Neocortex fast spiking (FS) interneuron; Neocortex spiking regular (RS) neuron; Neocortex spiking low threshold (LTS) neuron;
Channel(s): I Na,p; I Na,t; I L high threshold; I T low threshold; I A; I K; I M; I h; I K,Ca; I Calcium; I A, slow;
Gap Junctions: Gap junctions;
Receptor(s): GabaA; AMPA; NMDA;
Gene(s):
Transmitter(s):
Simulation Environment: FORTRAN;
Model Concept(s): Epilepsy;
Implementer(s): Traub, Roger D [rtraub at us.ibm.com];
Search NeuronDB for information about:  Thalamus geniculate nucleus/lateral principal GLU cell; Thalamus reticular nucleus GABA cell; Neocortex U1 L2/6 pyramidal intratelencephalic GLU cell; Neocortex U1 L6 pyramidal corticalthalamic GLU cell; GabaA; AMPA; NMDA; I Na,p; I Na,t; I L high threshold; I T low threshold; I A; I K; I M; I h; I K,Ca; I Calcium; I A, slow;
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HallEtAl2017
readme.txt
dexptablebig_setup.f *
dexptablesmall_setup.f *
fnmda.f *
groucho_gapbld.f *
groucho_gapbld_mix.f *
integrate_deepaxaxx.f *
integrate_deepbaskx.f *
integrate_deepLTSx.f *
integrate_deepng.f *
integrate_nontuftRSXXB.f *
integrate_nrtxB.f *
integrate_spinstelldiegoxB.f *
integrate_supaxaxx.f *
integrate_supbaskx.f *
integrate_supLTSX.f *
integrate_supng.f *
integrate_suppyrFRBxPB.f *
integrate_suppyrRS.f *
integrate_suppyrRSXPB.f *
integrate_tcrxB.f *
integrate_tuftIBVx3B.f *
integrate_tuftRSXXB.f *
makefile *
otis_table_setup.f *
spikewaveS96.f
spikewaveS96.pdf
synaptic_map_construct.f *
                            
            SUBROUTINE synaptic_map_construct (thisno,
     &    num_presynaptic_cells, num_postsynaptic_cells,
     &    map, num_presyninputs_perpostsyn_cell, display) 

c Construct a map of presynaptic cells of one type to postsyn.
c  cells of some type. 
c display is an integer flag.  If display = 1, print gjtable

        INTEGER thisno, num_presynaptic_cells,
     &   num_postsynaptic_cells,
     &   num_presyninputs_perpostsyn_cell,
     &   map (num_presyninputs_perpostsyn_cell,
     &          num_postsynaptic_cells) 
        INTEGER i,j,k,l,m,n,o,p
        INTEGER display

        double precision seed, x(1)

            seed = 297.d0
            map = 0
            k = 1

        do i = 1, num_postsynaptic_cells
        do j = 1, num_presyninputs_perpostsyn_cell
            call durand (seed, k, x)
c This defines a presynaptic cell

           L = int ( x(1) * dble (num_presynaptic_cells) )
           if (L.eq.0) L = 1
           if (L.gt.num_presynaptic_cells)
     &           L = num_presynaptic_cells

           map (j,i) = L

        end do
        end do

c Possibly print out map when done.
       if ((display.eq.1).and.(thisno.eq.0)) then
        write (6,800)               
800     format('  SYNAPTIC MAP ')
        do i = 1, num_postsynaptic_cells
         write (6,50) map(1,i), map(2,i),
     &        map(num_presyninputs_perpostsyn_cell,i)               
50       FORMAT(3i6)
        end do
       endif

                 END