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Proceedings Paper

Influence of spatiotemporal 1/f alpha-noise on structure formation in excitable media
Author(s): Hauke Busch; Jordi Garcia-Ojalvo; Friedemann Kaiser
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Paper Abstract

The influence of spatiotemporally correlated power-law, i.e. 1/f^\alpha$, noise on pattern formation in a two dimensional excitable medium consisting of coupled FitzHugh-Nagumo (FHN) oscillators is discussed. The signature of Spatiotemporal Stochastic Resonance (STSR) is investigated using the mutual information. It is found that optimal noise variance for STSR is minimal, if both the spatial and temporal power spectral densities of the noise decay with a characteristic exponent of \alpha$=1. This effect is related to the band-pass frequency filtering characteristic of the FHN oscillator.

Paper Details

Date Published: 7 May 2003
PDF: 10 pages
Proc. SPIE 5114, Noise in Complex Systems and Stochastic Dynamics, (7 May 2003); doi: 10.1117/12.492943
Show Author Affiliations
Hauke Busch, Darmstadt Univ. of Technology (Germany)
Jordi Garcia-Ojalvo, Univ. Politécnica de Catalunya (Spain)
Friedemann Kaiser, Darmstadt Univ. of Technology (Germany)

Published in SPIE Proceedings Vol. 5114:
Noise in Complex Systems and Stochastic Dynamics
Lutz Schimansky-Geier; Derek Abbott; Alexander Neiman; Christian Van den Broeck, Editor(s)

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