The influence of connectivity on the firing rate in a neuronal network with electrical and chemical synapses
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
---|---|
Data(s) |
30/10/2013
30/10/2013
01/02/2012
|
Resumo |
We study the firing rate properties of a cellular automaton model for a neuronal network with chemical synapses. We propose a simple mechanism in which the nonlocal connections are included, through electrical and chemical synapses. In the latter case, we introduce a time delay which produces self-sustained activity. Nonlocal connections, or shortcuts, are randomly introduced according to a specified connection probability. There is a range of connection probabilities for which neuron firing occurs, as well as a critical probability for which the firing ceases in the absence of time delay. The critical probability for nonlocal shortcuts depends on the network size according to a power-law. We also compute the firing rate amplification factor by varying both the connection probability and the time delay for different network sizes. (C) 2011 Elsevier B.V. All rights reserved. CNPq CAPES FAPESP Fundacao Araucaria |
Identificador |
PHYSICA A: STATISTICAL MECHANICS AND ITS APPLICATIONS, AMSTERDAM, v. 391, n. 3, pp. 819-827, FEB 1, 2012 0378-4371 http://www.producao.usp.br/handle/BDPI/36679 10.1016/j.physa.2011.09.014 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV AMSTERDAM |
Relação |
Physica A: Statistical Mechanics and its Applications |
Direitos |
closedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #NEURONAL NETWORKS #CHEMICAL SYNAPSES #ELECTRICAL SYNAPSES #CELLULAR AUTOMATA #CELLULAR-AUTOMATON MODEL #POPULATION OSCILLATIONS #RETINAL SENSITIVITY #EXCITABLE MEDIA #DYNAMICS #PSYCHOPHYSICS #PATTERNS #PHYSICS, MULTIDISCIPLINARY |
Tipo |
article original article publishedVersion |