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Title of Article

A MODEL OF ASTROCYTIC REGULATION OF INTERNEURON INHIBITORY AND EXCITATORY INPUTS


Issue
1
Date
2014

Article type
scientific article
UDC
51-72
Pages
218-228
Keywords
resource allocation, network structure, optimality principle of dynamic programming


Authors
Efremov G.F.
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo

Sharkov V.V.
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo

Petrov D.A.
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo


Abstract
The article proposes a mathematical model of astrocytic regulation of inhibitory and excitatory signal pathways in a neural network. The model describes the dynamics of an interneuron with excitatory and inhibitory inputs whose effi- ciencies are modulated by different gliatransmitters (glutamate, D-serine) released by neighboring astrocyte activation. This modulation coordinates the excitatory and inhibitory inputs, that allows the astrocyte to prevent interneuron hyper- excitation. In addition, the model predicts that the modulation is frequency-dependent and either potentiates or depresses the neuron response depending on the input frequency.

File (in Russian)