Nonstationary Stochastic Resonance in a Single Neuron-Like System

Details Nonstationary Stochastic Resonance in a Single Neuron-Like System Nonstationary Stochastic Resonance in a Single Neuron-Like System

1998-03-23

arxiv.org/abs/cond-mat/9803282v1

Physics

Condensed Matter

Plain Latex, 7 figures

Scientific paper

10.1103/PhysRevE.58.5175

Stochastic resonance holds much promise for the detection of weak signals in the presence of relatively loud noise. Following the discovery of nondynamical and of aperiodic stochastic resonance, it was recently shown that the phenomenon can manifest itself even in the presence of nonstationary signals. This was found in a composite system of differentiated trigger mechanisms mounted in parallel, which suggests that it could be realized in some elementary neural networks or nonlinear electronic circuits. Here, we find that even an individual trigger system may be able to detect weak nonstationary signals using stochastic resonance. The very simple modification to the trigger mechanism that makes this possible is reminiscent of some aspects of actual neuron physics. Stochastic resonance may thus become relevant to more types of biological or electronic systems injected with an ever broader class of realistic signals.

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