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On the stationary state of a network of inhibitory spiking neurons

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Abstract

The background activity of a cortical neural network is modeled by a homogeneous integrate-and-fire network with unreliable inhibitory synapses. For the case of fast synapses, numerical and analytical calculations show that the network relaxes into a stationary state of high attention. The majority of the neurons has a membrane potential just below the threshold; as a consequence the network can react immediately – on the time scale of synaptic transmission- on external pulses. The neurons fire with a low rate and with a broad distribution of interspike intervals. Firing events of the total network are correlated over short time periods. The firing rate increases linearly with external stimuli. In the limit of infinitely large networks, the synaptic noise decreases to zero. Nevertheless, the distribution of interspike intervals remains broad.

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Authors and Affiliations

  1. Institute of Theoretical Physics and Astrophysics, University of Würzburg, Am Hubland, Würzburg, Germany

    Wolfgang Kinzel

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  1. Wolfgang Kinzel
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Correspondence to Wolfgang Kinzel.

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Action Editor: Misha Tsodyks

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Kinzel, W. On the stationary state of a network of inhibitory spiking neurons. J Comput Neurosci 24, 105–112 (2008). https://doi.org/10.1007/s10827-007-0049-3

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  • DOI: https://doi.org/10.1007/s10827-007-0049-3

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