Visual Adaptation to Gradual Change of Intensity

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Science  10 Feb 1967:
Vol. 155, Issue 3763, pp. 710-712
DOI: 10.1126/science.155.3763.710


The eye can adapt to the rate of change of brightness. After exposure of the eye to a light that grows gradually brighter, a steady light appears to grow gradually dimmer, and vice versa. A field containing shading gives larger after effects than a spatially uniform field.