Stochastic resonance for the superimposed periodic pulse train

Stochastic Resonance in a coupled FitzHugh-Nagumo equation is investigated. The optimal noise intensity and the optimal input frequency, which maximiz e the signal to noise ratio of the output signal, are studied numerically, and their dependence on system parameters and connection coefficients is ex amined. It is found that a network composed of six elements can separate a superimposed periodic pulse train by controlling the noise intensity. (C) 1 999 Published by Elsevier Science B.V. All rights reserved.