Distributed synchrony in a cell assembly of spiking neurons

We investigate the formation of a Hebbian cell assembly of spiking neurons, using a temporal synaptic learning curve that is based on recent experimental findings. It includes potentiation for short time delays between pre- and post-synaptic neuronal spiking, and depression for spiking events occurr...

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Bibliographic Details
Published in:Neural networks 2001-07, Vol.14 (6), p.815-824
Main Authors: Levy, Nir, Horn, David, Meilijson, Isaac, Ruppin, Eytan
Format: Article
Language:English
Subjects:
Action Potentials - physiology
Animals
Cortical Synchronization
Humans
Learning - physiology
Models, Neurological
Nerve Net - physiology
Neuronal Plasticity - physiology
Neurons - physiology
Nonlinear Dynamics
Synaptic Transmission - physiology
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Summary:We investigate the formation of a Hebbian cell assembly of spiking neurons, using a temporal synaptic learning curve that is based on recent experimental findings. It includes potentiation for short time delays between pre- and post-synaptic neuronal spiking, and depression for spiking events occurring in the reverse order. The coupling between the dynamics of synaptic learning and that of neuronal activation leads to interesting results. One possible mode of activity is distributed synchrony, implying spontaneous division of the Hebbian cell assembly into groups, or subassemblies, of cells that fire in a cyclic manner. The behavior of distributed synchrony is investigated both by simulations and by analytic calculations of the resulting synaptic distributions.
ISSN:0893-6080
1879-2782
DOI:10.1016/S0893-6080(01)00044-2