spiral motion aftereffect
   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 and then shifting one's gaze to a stationary object, the object in question will appear to expand or contract, depending on the direction of the spiral's previous rotational movement. The spiral MAE has been classified by some as a special variant of the * waterfall illusion. However, it is usually classified as a * physiological illusion.
   References
   Mather, G., Verstraten, F., Anstis, S. (1998). The motion aftereffect: A modern perspective. Cambridge, MA: MIT Press.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • 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

  • spiral aftereffect —    see spiral motion aftereffect (spiral MAE) …   Dictionary of Hallucinations

  • spiral MAE —    see spiral motion aftereffect …   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

  • 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

  • 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

  • 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

  • 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

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”