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[af-ter-im-ij, ahf-] /ˈæf tərˌɪm ɪdʒ, ˈɑf-/
noun, Psychology
a visual image or other sense impression that persists after the stimulus that caused it is no longer operative.
1875-80; translation of German Nachbild; see after, image Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for after image


a sustained or renewed sensation, esp visual, after the original stimulus has ceased Also called aftersensation, photogene
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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after image in Medicine

afterimage af·ter·im·age (āf'tər-ĭm'ĭj)
A visual image that persists after the visual stimulus causing it has ceased to act. Also called photogene.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for after image


visual illusion in which retinal impressions persist after the removal of a stimulus, believed to be caused by the continued activation of the visual system. The afterimage may be positive, corresponding in colour or brightness to the original image, or negative, being less bright or of colours complementary to the original. A common afterimage is the spot of light one sees after a camera flash has been fired. The afterimage is the most readily observed of the class of phenomena known as aftersensations, or aftereffects.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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