Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2000-07-22
Phys. Rev. E, 62, 1149-1154, 2000
Nonlinear Sciences
Chaotic Dynamics
See home page http://lec.ugr.es/~julyan
Scientific paper
10.1103/PhysRevE.62.1149
Using the standard van der Pol-FitzHugh-Nagumo excitable medium model I demonstrate a novel generic mechanism, diversity, that provokes the emergence of global oscillations from individually quiescent elements in heterogeneous excitable media. This mechanism may be operating in the mammalian pancreas, where excitable beta cells, quiescent when isolated, are found to oscillate when coupled despite the absence of a pacemaker region.
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