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Nat Neurosci. 2000 Mar;3(3):251-8.

Microsaccadic eye movements and firing of single cells in the striate cortex of macaque monkeys.

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1
Dept. of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, Massachusetts 02115, USA. smart@hms.harvard.edu

Erratum in

  • Nat Neurosci 2000 Apr;3(4):409.

Abstract

When viewing a stationary object, we unconsciously make small, involuntary eye movements or 'microsaccades'. If displacements of the retinal image are prevented, the image quickly fades from perception. To understand how microsaccades sustain perception, we studied their relationship to the firing of cells in primary visual cortex (V1). We tracked eye movements and recorded from V1 cells as macaque monkeys fixated. When an optimally oriented line was centered over a cell's receptive field, activity increased after microsaccades. Moreover, microsaccades were better correlated with bursts of spikes than with either single spikes or instantaneous firing rate. These findings may help explain maintenance of perception during normal visual fixation.

PMID:
10700257
DOI:
10.1038/72961
[Indexed for MEDLINE]
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