afterimage

afterimage
Persistence of a visual response after cessation of the stimulus. SYN: accidental image, negative image.
- negative a. a. in which the lightness relationship is reversed; if chromatic, it appears in complementary color.
- positive a. a. in which the lightness relationship is the same as the original one; if chromatic, it appears in the same color.

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af·ter·im·age -.rim-ij n a usu. visual sensation occurring after stimulation by its external cause has ceased called also aftersensation, aftervision

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af·ter·im·age (afґtər-im″əj) a visual impression persisting briefly after cessation of the stimuli causing the original image; called also accidental or negative image and aftervision.

Medical dictionary. 2011.

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