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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Emergence and coherence of oscillations in star networks of stochastic excitable elements

Texto completo
Autor(es):
Kromer, Justus A. [1] ; Schimansky-Geier, Lutz [1, 2] ; Neiman, Alexander B. [3, 4]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Humboldt Univ, Dept Phys, Newtonstr 15, D-12489 Berlin - Germany
[2] Bernstein Ctr Computat Neurosci, Berlin - Germany
[3] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 - USA
[4] Ohio Univ, Neurosci Program, Athens, OH 45701 - USA
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Physical Review E; v. 93, n. 4 APR 8 2016.
Citações Web of Science: 5
Resumo

We study the emergence and coherence of stochastic oscillations in star networks of excitable elements in which peripheral nodes receive independent random inputs. A biophysical model of a distal branch of sensory neuron in which peripheral nodes of Ranvier are coupled to a central node by myelinated cable segments is used along with a generic model of networked stochastic active rotators. We show that coherent oscillations can emerge due to stochastic synchronization of peripheral nodes and that the degree of coherence can be maximized by tuning the coupling strength and the size of the network. Analytical results are obtained for the strong-coupling regime of the active rotator network. In particular, we show that in the strong-coupling regime, the network dynamics can be described by an effective single active rotator with rescaled parameters and noise. (AU)

Processo FAPESP: 11/50151-0 - Fenômenos dinâmicos em redes complexas: fundamentos e aplicações
Beneficiário:Elbert Einstein Nehrer Macau
Linha de fomento: Auxílio à Pesquisa - Temático