Breakdown of accmmodation in nerve: a possible role for INAp (Hennings et al 2005)

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The present modeling study suggests that persistent, low-threshold, rapidly activating sodium currents have a key role in breakdown of accommodation, and that breakdown of accommodation can be used as a tool for studying persistent sodium current under normal and pathological conditions. See paper for more and details.
1 . Hennings K, Arendt-Nielsen L, Andersen OK (2005) Breakdown of accommodation in nerve: a possible role for persistent sodium current. Theor Biol Med Model 2:16 [PubMed]
Model Information (Click on a link to find other models with that property)
Model Type: Neuron or other electrically excitable cell;
Brain Region(s)/Organism:
Cell Type(s): Spinal cord lumbar motor neuron alpha ACh cell; Myelinated neuron;
Channel(s): I Na,p; I Na,t; I K;
Gap Junctions:
Simulation Environment: MATLAB;
Model Concept(s): Action Potential Initiation; Action Potentials; Pathophysiology; Electrotonus;
Implementer(s): Hennings, Kristian [krist at];
Search NeuronDB for information about:  Spinal cord lumbar motor neuron alpha ACh cell; I Na,p; I Na,t; I K;
function [E0p,E0,E] = prepulseT(Type,P,Tp,Ts,M)
%PREPULSET Estimate the effect of prepulses, where the prepulse duration is changed
%   [E0p,E0,E] = prepulseT(Type,P,Tp,Ts,M)

Imax = 10e-9; Nmsi = 10; Itol = 0.0001e-9; noAP = 1; 

Spls = pulse(0,Ts); Spls = setDC(Spls,0);
E0 = excitation(Imax,Nmsi,Itol,noAP,[0 Ts+1e-3],M,Spls);        

for n = 1:length(Tp)
   M = MSAVE;
   Sp = pulse(0,Tp(n)); Sp = setDC(Sp,0);
   E0p(n) = excitation(Imax,Nmsi,Itol,noAP,[0 Tp(n)+1e-3],M,Sp);
   Sp = pulse(-P*E0p(n),Tp(n)); Sp = setDC(Sp,0);
   M.X0 = x0patch([0 Tp(n)],Sp,M); 
   E(n) = excitation(Imax,Nmsi,Itol,noAP,[0 Ts+1e-3],M,Spls);        

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