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The Electroretinogram and Visually Evoked Response

Joseph B. Green, MD

Arch Neurol. 1969;20(2):191-198.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

BOTH central and peripheral mechanisms may be involved in the convulsive response to photic stimulation in certain epileptics. There is disagreement as to whether the abnormal response is mediated by nonspecific (diffuse projecting system) or specific visual afferents.^1,2 The suggestion has also been made that abnormalities may exist at the retinal level because red light was a more effective stimulus than blue or green and also because closing the eyes increased photosensitivity.^3,4

The visually evoked response (VER), as measured from the scalp by an averaging device, is thought to bear some relationship to the visual pathways and to the photopic and scotopic systems.⁵ Some have denied any such specificity except for perhaps the earliest component of the VER.^6,7 An increase in the VER has been reported in photosensitive epileptics, especially of the later waves.⁸

The electroretinogram is a measure of retinal excitability which might . . . [Full Text PDF of this Article]

Author Affiliations
Indianapolis

From the Department of Neurology, Indiana University Medical Center, Indianapolis 46202.

Footnotes
Submitted for publication June 12, 1968; accepted Oct 8.

Reprint requests to Department of Neurology, Indiana University Medical Center, Indianapolis 46202 (Dr. Green).

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