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Nat Neurosci. 1998 Oct;1(6):501-7.

Coding of visual information by precisely correlated spikes in the lateral geniculate nucleus.

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1
Department of Neurobiology, Harvard Medical School, Boston, Massachusetts 02115, USA.

Abstract

Correlated firing among neurons is widespread in the nervous system. Precisely correlated spiking, occurring on a millisecond time scale, has recently been observed among neurons in the lateral geniculate nucleus with overlapping receptive fields. We have used an information-theoretic analysis to examine the role of these correlations in visual coding. Considerably more information can be extracted from two cells if temporal correlations between them are considered. The percentage increase in information depends on the degree of correlation; the average increase is approximately 20% for strongly correlated pairs. Thus, precise temporal correlation could be used as an additional information channel from thalamus to visual cortex.

PMID:
10196548
DOI:
10.1038/2217
[Indexed for MEDLINE]
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