Enhanced information transmission with signal-dependent noise in an array of nonlinear elements


We have investigated information transmission in an array of threshold units that have signal-dependent noise and a common input signal. We demonstrate a phenomenon similar to stochastic resonance and suprathreshold stochastic resonance with additive noise and show that information transmission can be enhanced by a nonzero level of noise. By comparing system performance to one with additive noise we also demonstrate that the information transmission of weak signals is significantly better with signal-dependent noise. Indeed, information rates are not compromised even for arbitrary small input signals. Furthermore, by an appropriate selection of parameters, we observe that the information can be made to be (almost) independent of the level of the noise, thus providing a robust method of transmitting information in the presence of noise. These result could imply that the ability of hair cells to code and transmit sensory information in biological sensory systems is not limited by the level of signal-dependent noise. © 2007 The American Physical Society.

Publication DOI: https://doi.org/10.1103/PhysRevE.75.021121
Divisions: Life & Health Sciences > Audiology
Life & Health Sciences > Clinical and Systems Neuroscience
Life & Health Sciences
Life & Health Sciences > Vision, Hearing and Language
Life & Health Sciences > Centre for Vision and Hearing Research
Additional Information: ©2007 American Physical Society. Enhanced information transmission with signal-dependent noise in an array of nonlinear elements A. Nikitin, N. G. Stocks, and R. P. Morse Phys. Rev. E 75, 021121 – Published 26 February 2007
Uncontrolled Keywords: Physics and Astronomy(all),Condensed Matter Physics,Statistical and Nonlinear Physics,Mathematical Physics
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://journals ... sRevE.75.021121 (Publisher URL)
PURE Output Type: Article
Published Date: 2007-02-26
Authors: Nikitin, A.
Stocks, N.G.
Morse, R.P.



Version: Published Version

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