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Isolation of Components due to Intracortical Processing in the Visual Evoked Potential
Jonathan D. Victor
Proceedings of the National Academy of Sciences of the United States of America
Vol. 83, No. 20 (Oct. 15, 1986), pp. 7984-7988
Published by: National Academy of Sciences
Stable URL: http://www.jstor.org/stable/28222
Page Count: 5
You can always find the topics here!Topics: Neurons, Mental stimulation, Luminance, Evoked potentials, Visual fields, Signals, Checkerboards, Action potentials, Antisymmetry, Neurobiology
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A class of stochastic visual textures are used to analyze the components of the visual evoked potential (VEP). This procedure exploits the differential sensitivity of populations of visual neurons to aspects of contrast and pattern. A simple transformation of VEP responses elicited by these stimuli separates components that reflect complex aspects of visual processing from those that reflect elementary aspects. Simultaneous recordings of the VEP and cellular activity in the cat lateral geniculate nucleus are obtained. Responses to traditional VEP stimuli contain a mixture of intracortically generated and precortically generated components. A theoretical and experimental analysis demonstrates that the present approach cleanly separates intracortical generators of the VEP from precortical generators.
Proceedings of the National Academy of Sciences of the United States of America © 1986 National Academy of Sciences