Coherence resonance in excitable electronic circuits in the presence of colored noise

Year: 2005

Authors: Brugioni S., Hwang D.-U., Meucci R., Boccaletti S.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi6, 50125 Firenze, Italy

Abstract: We give evidence of coherence resonance in an excitable electronic circuit whose dynamics obeys the FitzHugh-Nagumo model system, under the application of different noise sources, ranging from Gaussian white noise to colored 1/f(2) noises. The resonance behavior can be significantly reinforced when experimental parameters are tuned in order to place the stable fixed point closer to the excitability threshold of spiking behavior, as well as when the time scales of the circuit are properly modified. A quantitative description of the effects of noise correlations in inducing the resonant behavior is provided.

Journal/Review: PHYSICAL REVIEW E

Volume: 71 (6)      Pages from: 062101-1  to: 062101-4

KeyWords: Excitability threshold; Noise correlations, Gaussian noise (electronic); Mathematical models; Networks (circuits), Resonance
DOI: 10.1103/PhysRevE.71.062101

Citations: 12
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