Influence of spatiotemporal 1/f ∝-noise on structure formation in excitable media

被引：2
作者：
Busch, H [1 ]
García-Qjalvo, J [1 ]
Kaiser, F [1 ]
机构：
[1] Tech Univ Darmstadt, Inst Appl Phys, D-64289 Darmstadt, Germany
来源：
NOISE IN COMPLEX SYSTEMS AND STOCHASTIC DYNAMICS | 2003年 / 5114卷
关键词：
1/f noise; spatiotemporal pattern formation; data analysis; FitzHugh-Nagumo oscillator;
D O I：
10.1117/12.492943
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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.
引用
收藏
页码：468 / 477
页数：10
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