paper available Stimulus dependent correlations in stochastic networks (25 pages)

[Bert Kappen]

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Stimulus dependent correlations in stochastic networks (25 pages)
 
ABSTRACT: 
It has been observed that cortical neurons display synchronous
firing for some stimuli and not for others. The resulting synchronous
cell assemblies are thought to form the basis of object perception.
In this paper this 'dynamic linking' phenomenon is demonstrated in networks
of binary neurons with stochastic dynamics.
Analytical treatment within the mean field theory and linear response theory
is possible and is compared with simulations.
We establish that correlations are a sensitive function of the spatial
coherence in the stimulus.
We discuss the possibility to use these correlations as a mechanism for
scene segmentation.

The papar has been accepted for publication in Physical Review E.
 
Bert Kappen