Stochastic Resonance in Biology. How Noise Can Enhance Detection of Weak Signals and Help Improve Biological Information Processing

Overview

Journal Chemphyschem

Specialty Chemistry

Date 2002 Dec 31

PMID 12503175

Citations 76

Authors

Peter Hanggi

Affiliations

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Abstract

Noise is usually thought of as the enemy of order rather than as a constructive influence. In nonlinear systems that possess some sort of threshold, random noise plays a beneficial role in enhancing the detection of weak information-carrying signals. This phenomenon, termed stochastic resonance, does find useful applications in physical, biological, and biomedical contexts. Certain biological systems may even use this effect for optimizing function and behavior.

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