1.
Phys Rev E Stat Nonlin Soft Matter Phys
; 71(6 Pt 1): 062101, 2005 Jun.
Artigo
em Inglês
| MEDLINE
| ID: mdl-16089787
RESUMO
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/f2 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.