- spiral aftereffect
Dictionary of Hallucinations. J.D. Blom. 2010.
spiral aftereffect
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spiral motion aftereffect — (spiral MAE) Also known as spiral aftereffect. Both terms are used to denote a * motion aftereffect that can be induced with the aid of an * Archimedes s spiral or * Plateau s spiral. After viewing such a rotating spiral for several minutes… … Dictionary of Hallucinations
aftereffect — Also known as aftersensation and perceptual aftereffect. All three terms refer to the illusory visual perception that may follow prolonged exposure to a particular visual stimulus. As a rule, aftereffects present themselves in the inverted… … Dictionary of Hallucinations
spiral MAE — see spiral motion aftereffect … Dictionary of Hallucinations
Motion aftereffect — The motion after effect (MAE) is a visual illusion experienced after viewing a moving visual stimulus for a time (seconds to minutes) with stationary eyes, and then fixating a stationary stimulus. The stationary stimulus appears to move in the… … Wikipedia
Archimedes' spiral — Also known as Plateau s spiral. The eponym Archimedes spiral refers to the Greek mathematician and physicist Archimedes of Syracuse (297 212 BC). The eponym Plateau s spiral refers to the Belgian physicist Joseph Plateau (18011883). Both… … Dictionary of Hallucinations
Visual Angle Illusion — The visual angle, V degrees, subtended by a viewed object sometimes looks larger or smaller than its actual value, creating a visual angle illusion (V illusion).These V illusions have been explicitly described by many vision researchers,… … Wikipedia
Akinetopsia — Akinetopsia, also known as cerebral akinetopsia or motion blindness, is an extremely rare neuropsychological disorder in which a patient cannot perceive motion in their visual field, despite being able to see stationary objects without issue. For … Wikipedia
waterfall illusion — Also known as waterfall effect and waterfall phenomenon. All three terms refer to a variant of the * motion aftereffect characterized by an optical *illusion of upward motion in stationary objects. The term waterfall illusion was coined in or… … Dictionary of Hallucinations
Optical illusion — This article is about visual perception. For the Time Requiem album, see Optical Illusion (album). An optical illusion. The square A is exactly the same shade of gray as square B. See checker shadow illusion. An optical illusion (also called a… … Wikipedia
ancient Rome — ▪ ancient state, Europe, Africa, and Asia Introduction the state centred on the city of Rome. This article discusses the period from the founding of the city and the regal period, which began in 753 BC, through the events leading to the… … Universalium
