- Purkinje afterimage
- Also referred to as Purkinje image and Bidwell's ghost. The eponym Purkinje afterimage refers to the Bohemian physiologist Johannes Evange-lista Purkyne (1787-1869). It is used to denote a " negative afterimage that appears secondly in a temporal sequence of "afterimages resulting from a brieflight stimulus. Purkinje afterimages appear in a hue complementary to that of the original optical stimulus. The term is used in opposition to "Hering's afterimage (which is the first in the temporal sequence of afterimages) and " Hess afterimage (i.e. the third in this sequence). The Purkinje afterimage is usually classified as a " physiological illusion.ReferencesBrown, J.L. (1965). Afterimages.In: Vision and visual perception. Edited by Graham, C.H. New York, NY: Wiley.
Dictionary of Hallucinations. J.D. Blom. 2010.
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Purkinje afterimage — Pur·kin·je afterimage (.)pər kin jē n a second positive afterimage in a succession of visual afterimages resulting from a brief light stimulus and appearing most distinctly in a hue complementary to that of the original sensation Pur·ky·ne or… … Medical dictionary
purkinje afterimage — (ˌ)pərˈkin(ˌ)jē , ˈpu̇rkə̇nˌyā noun Usage: usually capitalized P Etymology: after Johannes E. Purkinje died 1869 Czech physiologist : a second positive afterimage in a succession of visual afterimages resulting from a brief light stimulus and… … Useful english dictionary
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
Purkinje figure — Also known as Purkyne figure. Both eponyms refer to the Bohemian physiologist Johannes Evangelista Purkyne (1787 1869). They are used to denote an entoptic phenomenon consisting of a black, tree like structure that can be made visible under… … Dictionary of Hallucinations
Purkinje image — see Purkinje afterimage … 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
Hering's afterimage — The eponym Hering s afterimage refers to the German psychologist and physiologist Karl Ewald Konstantin Hering (1834 1918). It is used to denote a positive afterimage that appears first in a temporal sequence of afterimages resulting from a… … Dictionary of Hallucinations
Hess afterimage — The eponym Hess afterimage refers to the German ophthalmologist Carl von Hess (1863 1923). It is used to denote a positive afterimage that appears third in a temporal sequence of afterimages resulting from a brief light stimulus. Hess… … Dictionary of Hallucinations
negative afterimage — Also known as Purkinje afterimage. The adjective negative refers to the fact that the colours of this type of * afterimage are complementary to the colours of the primary stimulus. The term negative afterimage is used in opposition to… … Dictionary of Hallucinations
postimagen de Purkinje — Eng. Purkinje s afterimage Segunda sensación visual positiva en la que el tono y características son complementarias a las de la primera sensación … Diccionario de oftalmología