Dictionary of Hallucinations. J.D. Blom. 2010.
afterimage — Also referred to as aftersensation, afterimagery, and post image. All three terms are used to denote a group of visual percepts that occur in response to a primary light stimulus to the eye, typically noticed after the stimulus has been… … Dictionary of Hallucinations
Afterimage — For other uses, see Afterimage (disambiguation). If the viewer stares at this image for 20 60 seconds and stares at a white object a negative afterimage will appear (in this case being cyan on magenta). This can also be achieved by the viewer… … Wikipedia
Afterimage (disambiguation) — An afterimage is an optical illusion that occurs after looking away from a direct gaze at an image.Afterimage or after image may also refer to:* Afterimage (shader effect), A computer graphics technique. * After Image ( Buffy novel), original… … Wikipedia
afterimage — /af teuhr im ij, ahf /, n. Psychol. a visual image or other sense impression that persists after the stimulus that caused it is no longer operative. [1875 80; trans. of G Nachbild; see AFTER, IMAGE] * * * ▪ psychology visual illusion in… … Universalium
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… … Medical dictionary
afterimage — noun An image which persists or remains in negative after the original stimulation has ended. , Syn: photogene … Wiktionary
complementary afterimage — The term complementary afterimage refers to a type of * afterimage in which the hues are approximately the complements of those in the original stimulating field. The complementary afterimage of a yellow circle, for example, is executed in… … Dictionary of Hallucinations
homochromatic afterimage — The term homochromatic afterimage is indebted to the Greek words homos (similar) and chroma (colour). It is used to denote a type of afterimage in which the distribution of hues is the same as that of the original stimulation field. The term… … Dictionary of Hallucinations
negative afterimage — n a visual afterimage in which light portions of the original sensation are replaced by dark portions and dark portions are replaced by light portions compare POSITIVE AFTERIMAGE * * * an afterimage in which the brights and darks are reversed… … Medical dictionary
positive afterimage — n a visual afterimage that retains the same light, dark, and color relationships as those appearing in the original image compare NEGATIVE AFTERIMAGE * * * an afterimage in which the bright, dark, and colored areas are the same as in the original … Medical dictionary
