SPATIOTEMPORAL STOCHASTIC RESONANCE IN EXCITABLE MEDIA

被引:321
作者
JUNG, P [1 ]
MAYERKRESS, G [1 ]
机构
[1] UNIV ILLINOIS, BECKMAN INST, CTR COMPLEX SYST RES, URBANA, IL 61801 USA
关键词
D O I
10.1103/PhysRevLett.74.2130
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present first numerical evidence that in an excitable medium the synchronization of spatiotemporal patterns with external excitatory waves shows a sharp peak at a finite, well-defined noise level independent of the system size. This effect can be understood as a generalization of the concept of stochastic resonance to spatially extended systems. We further show the impact of spatiotemporal stochastic resonance for the spreading of spiral waves, where the noise level controls the scale and size of the spiral. © 1995 The American Physical Society.
引用
收藏
页码:2130 / 2133
页数:4
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