Stochastic resonance of electrochemical aperiodic spike trains

P. Parmananda, Gerardo J. Escalera Santos, M. Rivera, and Kenneth Showalter

Phys. Rev. E 71, 031110 – Published 23 March 2005

Abstract

Aperiodic stochastic resonance in an electrochemical system with excitable dynamics is characterized in experiments and simulations. Two different spike trains, one with stochastic and the other with chaotic interspike intervals, are imposed on the system as subthreshold aperiodic signals. Information transmission is quantified by the cross correlation between the subthreshold input signal and the noise induced system response. A maximum is exhibited in the input-output correlation as a function of the noise amplitude. Numerical simulations with an electrochemical model are in excellent agreement with the experimental observations.

Received 3 September 2004

DOI:https://doi.org/10.1103/PhysRevE.71.031110

Authors & Affiliations

P. Parmananda¹, Gerardo J. Escalera Santos¹, M. Rivera¹, and Kenneth Showalter²

¹Facultad de Ciencias, UAEM, Avenida Universidad 1001, Colonia Chamilpa, Cuernavaca, Morelos, Mexico
²Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506-6045, USA

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Vol. 71, Iss. 3 — March 2005

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