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Proceedings Paper

Stochastic resonance in arrays of neurons
Author(s): Luigi Fortuna; Mattia Frasca; Manuela La Rosa; Alessandro Spata
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Paper 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.

Paper Details

Date Published: 25 May 2004
PDF: 7 pages
Proc. SPIE 5467, Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems II, (25 May 2004); doi: 10.1117/12.548628
Show Author Affiliations
Luigi Fortuna, Univ. degli Studi di Catania (Italy)
Mattia Frasca, Univ. degli Studi di Catania (Italy)
Manuela La Rosa, Univ. degli Studi di Catania (Italy)
STMicroelectronics (Italy)
Alessandro Spata, Univ. degli Studi di Catania (Italy)


Published in SPIE Proceedings Vol. 5467:
Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems II
Derek Abbott; Sergey M. Bezrukov; Andras Der; Angel Sanchez, Editor(s)

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