Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 374, Issue 1, Pages 46-54Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2006.06.026
Keywords
stochastic resonance; spatially-extended systems; field dependent diffusion
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Here we present a study of stochastic resonance (SR) 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 (SNR)) 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. (c) 2006 Elsevier B.V. All rights reserved.
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