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Perception. 1976;5(3):303-8. doi: 10.1068/p050303.

Striate cortex potentials related to eye movements in the light and in darkness in the waking human.

Perception

P Salzarulo, G C Lairy

PMID: 980671 DOI: 10.1068/p050303

Abstract

Potentials in relation to eye movements were studied by means of direct recording of the striate cortex in a waking man. In a lighted environment, the usual evoked potential--lambda response--was obtained and was clearly visible after each eye movement. In complete darkness no individual potential was observable by means of visual analysis after each eye movement, but a slow potential of low amplitude could be obtained by superimposition and averaging of the cortical striate activity time-locked to the start of a series of eye movements. This eye-movement potential showed a longer latency and a lower amplitude than the lambda response. These data are discussed in reference to those obtained in the cat and the monkey; the significance of this eye-movement potential in darkness as a 'corollary discharge' is considered.

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