Stochastic resonance in an extended FitzHugh–Nagumo system: The role of selective coupling

✍ Scribed by Claudio J. Tessone; Horacio S. Wio

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 358 KB
• Volume: 374
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/j.physa.2006.06.026

✦ Synopsis

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.