February 1979
Volume 18, Issue 2
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Articles  |   February 1979
Contrast sensitivity of the human neonate measured by the visual evoked potential.
Investigative Ophthalmology & Visual Science February 1979, Vol.18, 210-213. doi:
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      J Atkinson, O Braddick, J French; Contrast sensitivity of the human neonate measured by the visual evoked potential.. Invest. Ophthalmol. Vis. Sci. 1979;18(2):210-213.

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      © 2017 Association for Research in Vision and Ophthalmology.

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Abstract

Visual evoked potentials (VEPs) were recorded from a total of 97 1- to 10-day-old infants, with phase-reversing sinusoidal grating stimuli. The grating contrast or spatial frequency for which 50% of infants gave a statistically significant VEP was taken as a measure of threshold. This procedure yielded an estimate of neonatal acuity of 0.85 cycles/degree and an optimal contrast threshold of 50%. VEPs from an older infant showed good agreement with behavioral measures of sensitivity on the same individual. Comparison of the neonatal VEP results with behavioral data from 5-week-old infants, suggests little change in visual performance over the first month of life.

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