Scientific Results

Anticipated synchronization in neuronal systems subject to noise

Year: 2003

Authors: Toral R., Mirasso C.R., Masoller C., Ciszak M., Calvo O.

Autors Affiliation: (IMEDEA) CSIC-UIB, Ed. Mateu Orfila, Campus UIB, 07122-Palma de Mallorca, Spain; Departament de FĂ­sica, Universitat de les Illes Balears, Campus UIB, 07122-Palma de Mallorca, Spain; Facultad de Ciencias, Universidad de la Republica, Igua 4225, Montevideo 11400, Uruguay

Abstract: We report the observation of synchrony in two unidirectionally coupled (master-slave) model neurons (implemented by electronic circuits) in a noisy environment. Both neurons are subjected to the same random stimulus, and there is a recurrent inhibitory delayed connection in the slave neuron. We observe that synchrony occurs shifted in time, such that the slave neuron anticipates, i.e., forecasts, the response of the master neuron. By incorporating the effects of unidirectional coupling, delayed feedback and common noise into models of two spiking neurons, we are able to simulate successfully the experimental observations.

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KeyWords: Electric resistance; Function generators; Multiplying circuits; Neurology; Operational amplifiers; Synchronization, Excitability; Neuronal systems; Time delay dynamics, Spurious signal noise
DOI: 10.1117/12.490177

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