Neural model of frog ventilatory rhythmogenesis (Horcholle-Bossavit and Quenet 2009)

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Accession:123987
"In the adult frog respiratory system, periods of rhythmic movements of the buccal floor are interspersed by lung ventilation episodes. The ventilatory activity results from the interaction of two hypothesized oscillators in the brainstem. Here, we model these oscillators with two coupled neural networks, whose co-activation results in the emergence of new dynamics. .. The biological interest of this formal model is illustrated by the persistence of the relevant dynamical features when perturbations are introduced in the model, i.e. dynamic noises and architecture modifications. The implementation of the networks with clock-driven continuous time neurones provides simulations with physiological time scales."
Reference:
1 . Horcholle-Bossavit G, Quenet B (2009) Neural model of frog ventilatory rhythmogenesis. Biosystems 97:35-43 [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:
Cell Type(s):
Channel(s):
Gap Junctions:
Receptor(s):
Gene(s):
Transmitter(s):
Simulation Environment: MATLAB;
Model Concept(s): Temporal Pattern Generation; Oscillations; Synchronization;
Implementer(s):
%Biosystems. 2009 Jul;97(1):35-43.
%Horcholle-Bossavit G, Quenet B.
%Neural model of frog ventilatory rhythmogenesis.
%Fig.1

clear all
%global vpos1 vpos2 vpos3 vpos4
%global Tsim 

figure(1)
set(gcf,'position',[100 100 520 420])
if exist('chain5loop3N&R.jpg')
    subplot('position',[0.03 0.78 0.45 0.16]);
    fig1=imread('chain5loop3N&R.jpg');
    imagesc(fig1);
    axis off;
    text(380,-30,['A'],...
    'VerticalAlignment','middle',...
    'HorizontalAlignment','left',...
    'FontName','arial','FontWeight','normal','FontSize',16,'FontAngle','normal','Color',[0 0 0]) 
    text(1245,-30,['B'],...
    'VerticalAlignment','middle',...
    'HorizontalAlignment','left',...
    'FontName','arial','FontWeight','normal','FontSize',16,'FontAngle','normal','Color',[0 0 0])   
    text(-30,30,['a'],...
    'VerticalAlignment','middle',...
    'HorizontalAlignment','left',...
    'FontName','arial','FontWeight','normal','FontSize',16,'FontAngle','normal','Color',[0 0 0]) 
end    
    
vpos1=[0.07 0.4 0.4 0.28];
vpos2=[0.07 0.09 0.4 0.25];
Tsim=40;
Chain5loop3N

Izhinit
vpos3=[0.55 0.4 0.4 0.28];
vpos4=[0.55 0.09 0.4 0.25];
ChainloopIzhi
text(-42720,3,['b'],...
    'VerticalAlignment','middle',...
    'HorizontalAlignment','left',...
    'FontName','arial','FontWeight','normal','FontSize',16,'FontAngle','normal','Color',[0 0 0])
text(-42720,0.2,['c'],...
    'VerticalAlignment','middle',...
    'HorizontalAlignment','left',...
    'FontName','arial','FontWeight','normal','FontSize',16,'FontAngle','normal','Color',[0 0 0]) 
set(gcf,'Color',[1 1 1],'position',[100 100 520 420]);