Authors Referees APS Members |
January 2008, to be published in Physical Review E
Array enhancement of stochastic synchronization and signal-to-noise ratio
gain in the nonlinear regime of signal transmission
The {\it nonlinear} transformation of an external noisy signal by an array of non-interacting elements with internal noise is considered. The array simulates a neuronal system that processes spike trains. It is shown that increasing the number of array elements entails significant extending of the stochastic synchronization region and improvement of the signal-to-noise ratio (SNR). The effects are demonstrated for arrays of triggers, overdamped bistable oscillators and Fitzhugh-Nagumo systems. The interrelation between SNR improvement and the efficiency of information processing is discussed. © 2008 The American Physical Society.
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