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Owsley Sekuler Boldt Inv Ophthal 1981



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362 Invest Ophthalmol Vis Sci August 1981 Reports 6 Wiesel TN and Hubel DH Single cell responses in the striate cortex of kittens deprived of vision in one eye J Neurophysiol 26 1003 1963 7 Blakemore C and Van Sluyters RC Reversal of the physiological effects of monocular deprivation in kittens further evidence for a sensitive period J Physiol 237 195 1974 8 Movshon JA Reversal of the physiological effects of monocular deprivation in the kitten s visual cortex J Physiol 261 125 1976 9 Giffin F and Mitchell DE The rate of recovery of vision after early monocular deprivation in kittens J Physiol 274 511 1978 10 Crewther DP Crewther SG and Pettigrew JD A role for extraocular afferents in post critical period reversal of monocular deprivation J Physiol 282 181 1978 11 Freeman RD and Olson CR Is there a consolidation effect for monocular deprivation Nature 282 404 1979 12 Hubel DH and Wiesel TN Receptive fields binocular interaction and functional architecture in the cat s visual cortex J Physiol 160 106 1962 13 Olson CR and Freeman RD Cumulative effect of brief daily periods of monocular vision on kitten striate cortex Exp Brain Res 38 53 1980 Aging and low contrast vision face perception CYNTHIA OWSLEY ROBERT SEKULER AND CULVER BOLDT Previous work showed that despite good visual acuity many healthy older people require more contrast to see gratings of low and intermediate spatial frequencies than do younger observers Here we report that a daily perceptual activity which relies on lower spatial frequency information is also adversely affected as compared to young individuals many older individuals require more contrast to detect a face and to discriminate between two faces Ocular pathology optical changes within the eyeball and variation in criterion are tided out as explanations for the age related elevation in threshold Lower spatial frequencies carry information sufficient for many routine perceptual activities such as face perception separation of figure from ground



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