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Alfred L. Ochs, PhD; Michael J. Aminoff, MD

Arch Neurol. 1980;37(5):308-309.

Abstract
• In the belief that it would prove a more effective stimulus for eliciting visual evoked potentials, a circular grating was designed so that the relationship between its bar width and visual acuity was held constant, and, therefore, the bars were equally well resolved across the visual field. Visual evoked potentials elicited by the onset presentation of the pattern were evaluated but found to be excessively variable owing to summation of different waveforms generated by equivalent stimulation of different parts of the visual field.

Author Affiliations
From the Department of Neurology and Neuro-ophthalmology Unit, University of California School of Medicine, San Francisco.

Footnotes
Accepted for publication Aug 7, 1979.

Reprint requests to Department of Neurology, School of Medicine, University of California, San Francisco, CA 94143 (Dr Aminoff).

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