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Dark-adapted adults' electroretinographic b-wave thresholds are approximately 2 log units below a-wave thresholds and approximately 3 log units above the perceptual threshold, and their perceptual and the visually evoked cortical potential (VEP) thresholds are similar. Dark-adapted infants' scotopic a- and b-wave thresholds for full-field stimuli are both about 0.5 log units above those of adults, but their scotopic VEP thresholds for such stimuli have not been studied. We obtained scotopic VEP thresholds for brief, full-field stimuli from dark-adapted, infants and adults to consider the relationships of the cortical responses to the responses of more distal structures, namely the rod photoreceptors (scotopic a-wave) and ON-bipolars (scotopic b-wave). The median VEP threshold of infants is 0.5 log unit above that of adults. Thus, the relationships of a- and b-wave and VEP thresholds in infants are similar to those in adults. These results are consistent with rod cell immaturities being the primary determinant of the difference between infants' and adults' thresholds.
R M Hansen, and
A B Fulton
April 1988,
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R M Hansen, and
A B Fulton
June 2019,
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R M Hansen, and
A B Fulton
September 2014,
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R M Hansen, and
A B Fulton
January 1984,
Vision research,
R M Hansen, and
A B Fulton
March 1986,
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R M Hansen, and
A B Fulton
July 2015,
Optics letters,
R M Hansen, and
A B Fulton
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Vision research,
R M Hansen, and
A B Fulton
December 2020,
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R M Hansen, and
A B Fulton
June 1967,
Journal of the Optical Society of America,
R M Hansen, and
A B Fulton
January 1937,
The Journal of physiology,
