Luminance sensitivity recovers quickly in monocularly deprived cats.
We measured increment thresholds, using a reaction time or two-choice behavioral technique, in three cats monocularly deprived of normal vision for 14-16 months. Luminance increment thresholds could be obtained as early as nine days after lid opening and improved by 0.5-2.0 log units over the next few weeks. Also, visual reaction times decreased during the sensitivity improvement. When compared to the data for grating discrimination, these results suggest that visual recovery from monocular deprivation may proceed at different rates for different psychophysical discriminations.
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Department of Physiological Optics, School of Optometry, University of Alabama, Birmingham 35294.
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D000818:Animals; D002415:Cats; D004192:Discrimination, Psychological / Q000502:physiology; D008027:Light; D010364:Pattern Recognition, Visual / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D012054:Reinforcement, Psychology; D012683:Sensory Deprivation / Q000502:physiology*; D012684:Sensory Thresholds / Q000502:physiology; D013997:Time Factors; D014796:Visual Perception / Q000502:physiology*