June 1965
Volume 4, Issue 3
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Articles  |   June 1965
Studies on the Visual Evoked Response
Author Affiliations
  • ALBERT M. POTTS
    Eye Research Laboratories, The University of Chicago, 950 East 59th Street, Chicago, Ill. 60637
  • TADASHI NAGAYA
    Eye Research Laboratories, The University of Chicago, 950 East 59th Street, Chicago, Ill. 60637
Investigative Ophthalmology & Visual Science June 1965, Vol.4, 303-309. doi:
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      ALBERT M. POTTS, TADASHI NAGAYA; Studies on the Visual Evoked Response . Invest. Ophthalmol. Vis. Sci. 1965;4(3):303-309.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

A narrow band stimulus which peaks at 690 mµ and subtends an angle of 0.06 degree causes a detectable visual evoked response in all normal subjects tested when 100 responses are summated by a computer. Eccentric fixation by as little as 2 degrees abolishes the response. Obstacles to image formation such as a corneal ulcer abolish the response. There is marked correspondence between subjective psychophysical findings and the visual evoked response. There is marked variation in response among individuals and in the same individual at different times. The level of subjective attention is one factor which helps account for the variability.

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