Global firing induced by noise or diversity in excitable media

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We develop a theory for the emergence of global firings in non-identical excitable systems subject to noise. Three different dynamical regimes arise: sub-threshold motion, where all elements remain confined near the fixed point; coherent pulsations, where a macroscopic fraction fire simultaneously; and incoherent pulsations, where units fire in a disordered fashion. We also show that the mechanism for global firing is generic: it arises from degradation of entrainment originated either by noise or by diversity.
4 pages, 1 figure

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Statistical Mechanics, Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/231391

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0505465
 http://arxiv.org/abs/cond-mat/0505465
 Physical Review E, Vol. 75, pp. 016203 (2007)
 doi:10.1103/PhysRevE.75.016203

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arXiv