This article is published in The Journal of Neuroscience, Rapi

Asher Uziel

Henry Markram

Misha Tsodyks

Throughout the neocortex, groups of neurons have been found to fire synchronously on the time scale of several milliseconds. This near coincident firing of neurons could coordinate the multifaceted information of different features of a stimulus. The mechanisms of generating such synchrony are not clear. We simulated the activity of a population of excitatory and inhibitory neurons randomly interconnected into a recurrent network via synapses that display temporal dynamics in their transmission; surprisingly, we found a behavior of the network where action potential activity spontaneously self-organized to produce highly synchronous bursts involving virtually the entire network. These population bursts were also triggered by stimuli to the network in an all-or-none manner. We found that the Although increased firing rate of a single neuron is the clearest signature of its participation in a particular processing, growing evidence indicates that temporal coherence in the activity of groups of neurons may be an important component of the neuronal code. Indeed, throughout the neocortex, the spiking activity of groups of cells has been found to exhibit various patterns of synchrony, during both spontaneous activity and under sensor

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Synchrony generation in recurrent networks with frequency-dependent synapses

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Synchrony Generation in Recurrent Networks with Frequency-Dependent Synapses

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