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Influence of the interaction time-delay on the noise induced system size resonance in a system of all-to-all electrically coupled FitzHugh-Nagumo excitable neurons is studied. It is observed that small time-lags decrease and that large time-lags increase the coherence of spiking. Bifurcations of the system's stationary state are used to explain the observed non-monotonic dependence of coherence on...
The phenomenon of coherence resonance (CR) in the coupled Fitz Hugh-Nagumo neuron models driven by the colored noise is investigated. Based on the method of colored noise approximation and Euler schemes, the interval-spike-interval (ISI) of the neuron firing and the coefficient of variation (CV) have been obtained. It is shown that the CV is a non-monotonic function of the coupling strength and the...
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