Global firing induced by noise or diversity in excitable media

Details Global firing induced by noise or diversity in excitable media Global firing induced by noise or diversity in excitable media

2005-05-19

arxiv.org/abs/cond-mat/0505465v2

Physical Review E, Vol. 75, pp. 016203 (2007)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevE.75.016203

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.

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