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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Kromer, Justus A. [1] ; Schimansky-Geier, Lutz [2, 1] ; Neiman, Alexander B. [3, 4]
Total Authors: 3
Affiliation:
[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
Total Affiliations: 4
Document type: Journal article
Source: Physical Review E; v. 93, n. 4 APR 8 2016.
Web of Science Citations: 5
Abstract

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)

FAPESP's process: 11/50151-0 - Dynamical phenomena in complex networks: fundamentals and applications
Grantee:Elbert Einstein Nehrer Macau
Support type: Research Projects - Thematic Grants