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

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 V1 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.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Golledge HD,Panzeri S,Zheng F,Pola G,Scannell JW,Giannikopoulos DV,Mason RJ,Tovée MJ,Young MP

doi

10.1097/01.wnr.0000073681.00308.9c

subject

Has Abstract

pub_date

2003-05-23 00:00:00

pages

1045-50

issue

7

eissn

0959-4965

issn

1473-558X

journal_volume

14

pub_type

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