Effect of chemical synapse on vibrational resonance in coupled neurons

The response of three coupled FitzHugh-Nagumo neurons, under high-frequency driving, to a subthreshold low-frequency signal is investigated. We show that an optimal amplitude of the high-frequency driving enhances the response of coupled excited neurons to a subthreshold low-frequency input, and the...

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Bibliographic Details
Published inChaos (Woodbury, N.Y.) Vol. 19; no. 1; p. 013117
Main Authors Deng, Bin, Wang, Jiang, Wei, Xile
Format Journal Article
LanguageEnglish
Published United States 01.03.2009
Subjects
Action Potentials - physiology
Animals
Brain - physiology
Computer Simulation
Gap Junctions - physiology
Humans
Membrane Potentials - physiology
Models, Neurological
Models, Statistical
Models, Theoretical
Nerve Net - physiology
Neurons - physiology
Stochastic Processes
Synapses
Synaptic Transmission - physiology
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ISSN1089-7682
DOI10.1063/1.3076396

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Summary:The response of three coupled FitzHugh-Nagumo neurons, under high-frequency driving, to a subthreshold low-frequency signal is investigated. We show that an optimal amplitude of the high-frequency driving enhances the response of coupled excited neurons to a subthreshold low-frequency input, and the chemical synaptic coupling is more efficient than the well-known electrical coupling (gap junction), especially when the coupled neurons are near the canard regime, for local signal input, i.e., only one of the three neurons is subject to a low-frequency signal. The influence of additive noise and the interplay between vibrational and stochastic resonance are also analyzed.
ISSN:1089-7682
DOI:10.1063/1.3076396