Stochastic resonance and the benefit of noise in nonlinear systems

摘要: Stochastic resonance is a nonlinear effect wherein the noise turns out to be beneficial transmission or detection of an information-carrying signal. This paradoxical has now been reported in large variety systems, including electronic circuits, optical devices, material-physics phenomena, neuronal chemical reactions. can take place under various forms, according types considered for noise, informationcarrying signal, system realizing detection, and quantitative measure performance receiving improvement from noise. These elements will discussed here so as provide general overview effect. Various examples treated that illustrate typical signals systems give rise stochastic resonance. measures quantify also presented, together with analytical approaches theoretical prediction For instance, we shall describe where output signal-to-noise ratio input-output information capacity increase when level raised. Also temporal well images considered. Perspectives on current developments evoked.