Stochastic Resonance in Ensembles of Nondynamical Elements: The Role of Internal Noise

Journal Article · Mon Dec 01 00:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.4701· OSTI ID:550591

Gailey, P C ^[1]; Neiman, A; Moss, F ^[2]; Neiman, A ^[3]; Collins, J J ^[4]

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1. Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6070 (United States)
2. Center for Neurodynamics, University of Missouri at St.Louis, St.Louis, Missouri 63121 (United States)
3. Department of Physics, Saratov State University, Saratov 410073 (Russia)
4. Department of Biomedical Engineering, Boston University, 44 Cummington Street, Boston, Massachusetts 02215 (United States)

While many examples of noise-induced signal enhancement have been reported, the role of internal noise has received little attention. Here we study aperiodic stochastic resonance in parallel arrays of nondynamical elements with internal noise. Ensembles of both threshold and threshold-free elements are studied, and the model is applied to two-state ion channels. In finite systems where the input signal controls the probability of discrete events, we demonstrate that the internal noise is modulated by both the applied signal and the external noise. We also show that the internal noise plays a constructive role in information transfer through such systems via an increase in external noise. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 550591
• Journal Information: Physical Review Letters, Vol. 79, Issue 23; Other Information: PBD: Dec 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
NOISE
STOCHASTIC PROCESSES
RESONANCE
ION CHANNELING
SIGNAL-TO-NOISE RATIO
FLUCTUATIONS