Stochastic Resonance in an Extended FitzHugh-Nagumo System: the Role of Selective Coupling
arXiv:cond-mat/0607689 · doi:10.1016/j.physa.2006.06.026
Abstract
Here we present a study of stochastic resonance in an extended FitzHugh-Nagumo system with a field dependent activator diffusion. We show that the system response (here measured through the output signal-to-noise ratio) is enhanced due to the particular form of the non-homogeneous coupling. Such a result supports previous ones obtained in a simpler scalar reaction-diffusion system and shows that such an enhancement, induced by the field dependent diffusion -or selective coupling-, is a robust phenomenon.
arXiv comment14 pages, 19 figures
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