A square root law for adaptation to contrast?
Several characteristic of aftereffects (especially the motion aftereffect) depend upon the square root of the time spent adapting. The same parameters are here examined for the contrast threshold elevation aftereffect. The time taken to recover is shown to be well predicted by root adaptation time (beyond a minimum duration), but the amount of threshold elevation, the rate of recovery and the integrated recovery phase cannot be so predicted.
Rose
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D000221:Adaptation, Ocular / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology*; D005366:Figural Aftereffect / Q000502:physiology; D006801:Humans; D008433:Mathematics; D010364:Pattern Recognition, Visual / Q000502:physiology; D012684:Sensory Thresholds / Q000502:physiology; D013997:Time Factors