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CA1 pyramidal neuron: depolarization block (Bianchi et al. 2012)
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Accession:
143719
NEURON files from the paper: On the mechanisms underlying the depolarization block in the spiking dynamics of CA1 pyramidal neurons by D.Bianchi, A. Marasco, A.Limongiello, C.Marchetti, H.Marie,B.Tirozzi, M.Migliore (2012). J Comput. Neurosci. In press. DOI: 10.1007/s10827-012-0383-y. Experimental findings shown that under sustained input current of increasing strength neurons eventually stop firing, entering a depolarization block. We analyze the spiking dynamics of CA1 pyramidal neuron models using the same set of ionic currents on both an accurate morphological reconstruction and on its reduction to a single-compartment. The results show the specic ion channel properties and kinetics that are needed to reproduce the experimental findings, and how their interplay can drastically modulate the neuronal dynamics and the input current range leading to depolarization block.
Reference:
1 .
Bianchi D, Marasco A, Limongiello A, Marchetti C, Marie H, Tirozzi B, Migliore M (2012) On the mechanisms underlying the depolarization block in the spiking dynamics of CA1 pyramidal neurons.
J Comput Neurosci
33
:207-25
[
PubMed
]
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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:
Hippocampus;
Cell Type(s):
Hippocampus CA1 pyramidal GLU cell;
Channel(s):
I Na,t;
I A;
I K;
I M;
I h;
I K,Ca;
I_AHP;
Gap Junctions:
Receptor(s):
GabaA;
AMPA;
NMDA;
Gene(s):
Transmitter(s):
Gaba;
Glutamate;
Simulation Environment:
NEURON;
Mathematica;
Model Concept(s):
Simplified Models;
Depolarization block;
Bifurcation;
Implementer(s):
Bianchi, Daniela [danielabianchi12 -at- gmail.com];
Limongiello, Alessandro [alessandro.limongiello at unina.it];
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for information about:
Hippocampus CA1 pyramidal GLU cell
;
GabaA
;
AMPA
;
NMDA
;
I Na,t
;
I A
;
I K
;
I M
;
I h
;
I K,Ca
;
I_AHP
;
Gaba
;
Glutamate
;
/
Ca1_Bianchi
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