Stochastic resonance in arrays of neurons

Luigi Fortuna; Mattia Frasca; Manuela La Rosa; Alessandro Spata

doi:10.1117/12.548628

25 May 2004 Stochastic resonance in arrays of neurons

Luigi Fortuna, Mattia Frasca, Manuela La Rosa, Alessandro Spata

Proceedings Volume 5467, Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems II; (2004) https://doi.org/10.1117/12.548628
Event: Second International Symposium on Fluctuations and Noise, 2004, Maspalomas, Gran Canaria Island, Spain

Abstract

The concept of stochastic resonance introduced the idea that the presence of noise in nonlinear systems may have benefic effects. In this paper different regular topologies of populations of FitzHugh-Nagumo neurons have been investigated with respect to the presence of noise in the network. Each neuron is subjected to an independent source of noise. In these conditions the behavior of the population depend on the connection among the elements. In population of uncoupled neurons the so-called stochastic resonance without tuning was observed. Moreover, we show that globally coupled neurons have increasing response-to-stimulus coherence for increasing values of the coupling strength. In locally coupled neurons the performance depend on the neighborhood radius and in general are higher than in the case of uncoupled neurons.

Citation Download Citation

Luigi Fortuna, Mattia Frasca, Manuela La Rosa, and Alessandro Spata "Stochastic resonance in arrays of neurons", Proc. SPIE 5467, Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems II, (25 May 2004); https://doi.org/10.1117/12.548628

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