Correlations, feature-binding and population coding in primary visual cortex

Golledge, Huw D.R. and Panzeri, Stafano and Zheng, Fashan and Pola, Gianni and Scannell, Jack W. and Giannikopoulos, Dimitrios V. and Mason, Roger J. and Tovee, Martin J. and Young, Malcolm P. (2003) Correlations, feature-binding and population coding in primary visual cortex. NeuroReport, 14 (7). pp. 1045-1050. ISSN 0959-4965

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Abstract

To test the hypothesis that correlated neuronal activity serves as the neuronal code for visual feature binding, we applied information theory techniques to multiunit activity recorded from pairs of VI recording sites in anaesthetised cats while presenting either single or separate bar stimuli. We quantified the roles of firing rates of individual channels and of cross-correlations between recording sites in encoding of visual information. Between 89 and 96 of the information was carried by firing rates; correlations contributed 4-11 extra information. The distribution across the population of either correlation strength or correlation information did not co-vary systematically with changes in perception predicted by Gestalt psychology. These results suggest that firing rates, rather than correlations, are the main element of the population code for feature binding in primary visual cortex.

Keywords:Information theory, Synchronization, Visual cortex
Subjects:C Biological Sciences > C800 Psychology
C Biological Sciences > C850 Cognitive Psychology
B Subjects allied to Medicine > B140 Neuroscience
C Biological Sciences > C830 Experimental Psychology
C Biological Sciences > C840 Clinical Psychology
Divisions:College of Social Science > School of Psychology
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ID Code:24515
Deposited On:11 Aug 2017 10:30

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