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PubMed · 8249334

Does chromatic sensitivity develop more slowly than luminance sensitivity?

D Allen·M S Banks·A M Norcia
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Abstract

Chromatic sensitivity is very low in humans during the first few months of life. We examined whether low chromatic sensitivity reflects a deficiency among chromatic mechanisms or whether it is simply a manifestation of poor visual sensitivity in general. The sweep VEP was used to measure contrast sensitivity to gratings varying in the mixture of red and green components. For infants from 2 to 8 weeks of age, sensitivity to all mixtures was lower than color-normal adults' sensitivity, but infant and adult ratios of luminance/chromatic sensitivity were similar. This finding is consistent with the hypothesis that infants have functional MWS and LWS cones and the requisite post-receptor chromatic mechanisms to compare their signals.

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Age FactorsColor PerceptionColor Vision DefectsContrast SensitivityDiscrimination, PsychologicalEvoked Potentials, VisualHumansInfantInfant, NewbornLightPattern Recognition, VisualSensory ThresholdsSpectrophotometryJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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BibTeXRIS

D Allen, M S Banks, A M Norcia. 1993. Does chromatic sensitivity develop more slowly than luminance sensitivity?. https://doi.org/10.1016/0042-6989(93)90134-i

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