title: Striate cortex potentials related to eye movements in the light and in darkness in the waking human.
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.
mesh_terms: D003624:Darkness; D005071:Evoked Potentials; D005133:Eye Movements; D006801:Humans; D008027:Light; D013997:Time Factors; D014793:Visual Cortex / Q000502:physiology*