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Objective assessment of the functional role of spike train correlations using information measures

Lookup NU author(s): Dr Stefano Panzeri, Dr Huw Golledge, Dr Martin Tovee, Professor Malcolm Young

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Abstract

The functional role of correlations between neuronal spike trains remains strongly debated. This debate partly stems from the lack of a standardized analysis technique capable of accurately quantifying the role of correlations in stimulus encoding. We believe that information theoretic measures may represent an objective method for analysing the functional role of neuronal correlations. Here we show that information analysis of pairs of spike trains allows the information content present in the firing rate to be disambiguated from any extra information that may be present in the temporal relationships of the two spike trains. We validate and illustrate the method by applying it to simulated data with variable degrees of known synchrony, and by applying it to recordings from pairs of sites in the primary visual cortex of anaesthetized cats. We discuss the importance of information theoretic analysis in elucidating the neuronal mechanisms underlying object identification.

Publication metadata

Author(s): Panzeri S; Tovee MJ; Golledge HDR; Young MP; Zhang FS

Publication type: Article

Publication status: Published

Journal: Visual Cognition

Year: 2001

Volume: 8

Issue: 3-5

Pages: 531-547

ISSN (print): 1350-6285

ISSN (electronic): 1464-0716

Publisher: Psychology Press

URL: http://dx.doi.org/10.1080/13506280143000106

DOI: 10.1080/13506280143000106

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