Concept information
Preferred term
optical illusion
Definition
- An optical illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by a visual percept that arguably appears to differ from reality. Illusions come in a wide variety; their categorization is difficult because the underlying cause is often not clear[3] but a classification[1][4] proposed by Richard Gregory is useful as an orientation. According to that, there are three main classes: physical, physiological, and cognitive illusions, and in each class there are four kinds: Ambiguities, distortions, paradoxes, and fictions. (Wikipedia)
Broader concept
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/VH8-LH30QVKN-2
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