Impact of dendritic atrophy on intrinsic and synaptic excitability (Narayanan & Chattarji, 2010)

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Accession:147867
These simulations examined the atrophy induced changes in electrophysiological properties of CA3 pyramidal neurons. We found these neurons change from bursting to regular spiking as atrophy increases. Region-specific atrophy induced region-specific increases in synaptic excitability in a passive dendritic tree. All dendritic compartments of an atrophied neuron had greater synaptic excitability and a larger voltage transfer to the soma than the control neuron.
Reference:
1 . Narayanan R, Chattarji S (2010) Computational analysis of the impact of chronic stress on intrinsic and synaptic excitability in the hippocampus. J Neurophysiol 103:3070-83 [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; Synapse; Dendrite;
Brain Region(s)/Organism: Hippocampus;
Cell Type(s): Hippocampus CA3 pyramidal GLU cell;
Channel(s): I Na,t; I L high threshold; I N; I T low threshold; I A; I K; I M; I h; I K,Ca; I Calcium; I_AHP;
Gap Junctions:
Receptor(s): AMPA;
Gene(s):
Transmitter(s): Glutamate;
Simulation Environment: NEURON;
Model Concept(s): Active Dendrites; Influence of Dendritic Geometry; Detailed Neuronal Models; Action Potentials; Conductance distributions;
Implementer(s): Narayanan, Rishikesh [rishi at iisc.ac.in];
Search NeuronDB for information about:  Hippocampus CA3 pyramidal GLU cell; AMPA; I Na,t; I L high threshold; I N; I T low threshold; I A; I K; I M; I h; I K,Ca; I Calcium; I_AHP; Glutamate;
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{apical[3] connect apical[5](0), 1}
{access apical[5]}
{pt3dclear()}
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{pt3dadd(-10.8,199.713,13.25,0.8)}

{apical[5] connect apical[6](0), 1}
{access apical[6]}
{pt3dclear()}
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{pt3dadd(0.16,340.985,49,0.8)}
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{pt3dadd(3.272,348.606,44,0.48)}
{pt3dadd(3.149,349.598,44,0.48)}

{apical[5] connect apical[7](0), 1}
{access apical[7]}
{pt3dclear()}
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{pt3dadd(-10.8,199.713,13.275,0.48)}
{pt3dadd(-11.012,203.197,16,0.48)}
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{pt3dadd(-11.864,220.381,14.5,0.48)}
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{pt3dadd(-11.438,228.64,14.5,0.48)}
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{pt3dadd(-12.276,240.171,14.25,0.48)}
{pt3dadd(-12.063,249.535,15.5,0.48)}
{pt3dadd(-12.276,249.535,15.25,0.48)}
{pt3dadd(-11.438,257.794,16.25,0.48)}
{pt3dadd(-9.523,261.93,3.5,0.48)}
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{pt3dadd(-6.77,267.809,3.5,0.48)}
{pt3dadd(-6.57,268.234,3.5,0.48)}
{pt3dadd(-7.408,273.022,3.5,0.48)}
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{pt3dadd(-3.604,281.082,3.5,0.48)}
{pt3dadd(-3.604,281.295,3.5,0.48)}
{pt3dadd(-5.293,284.341,3.25,0.48)}
{pt3dadd(-4.868,289.554,3.25,0.48)}
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{pt3dadd(-7.834,312.617,-1.5,0.48)}
{pt3dadd(-7.155,318.579,-1.5,0.48)}

{apical[0] connect apical[8](0), 1}
{access apical[8]}
{pt3dclear()}
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{pt3dadd(-12.914,46.776,14.775,3.34)}
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{pt3dadd(-0.426,137.495,0.75,1.76)}
{pt3dadd(-1.689,149.027,0.75,1.76)}
{pt3dadd(-0.638,149.678,0.7,1.76)}
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{pt3dadd(1.689,162.513,0.7,1.44)}
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{pt3dadd(35.365,300.008,-17.3,0.8)}
{pt3dadd(33.662,303.479,-26.8,0.8)}
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{pt3dadd(35.365,325.238,-36.55,0.8)}
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{pt3dadd(27.318,362.226,-37.55,0.8)}
{pt3dadd(26.467,364.832,-37.55,0.8)}
{pt3dadd(25.829,365.697,-37.8,0.8)}
{pt3dadd(25.829,365.697,-37.775,0.48)}
{pt3dadd(22.863,370.059,-23.55,0.48)}
{pt3dadd(17.569,376.802,-24.55,0.48)}
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