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Coherence resonance in coupled excitable systems: dependence with system size

AuthorsTessone, Claudio J.; Toral, Raúl ; Mirasso, Claudio R. ; Gunton, James D.
KeywordsNoise induced effects
Coherence resonance
Excitable systems
Issue Date5-Jan-2005
PublisherIOS Press
CitationProceedings of the International School of Physics Enrico Fermi, Course CLV
The Physics of Complex Systems (New Advances and Perspectives) (Nov. 2004)
AbstractWe report on the existence of a coherence resonance effect as a function of the system size. We consider globally coupled FitzHugh-Nagumo systems under the effect of white noise and study the synchronization of the response as well as the regularity, as measured both by the jitter and the time correlation, is optimal for an intermediate value of the number of coupled elements. A simple theory, based on the Gaussian approximation, is able to explain qualitatively the observed phenomenon.
Description10 pages.-- Published in: The Physics of Complex Systems, Vol. 155 International School of Physics Enrico Fermi, edited by F. Mallamace and H.E. Stanley (IOS Press, Nov. 2004)
Appears in Collections:(IFISC) Artículos
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