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Peripheral drift illusion

The peripheral drift illusion (PDI) refers to a motion illusion generated by the presentation of a sawtooth luminance grating in the visual periphery. This illusion was first described by Faubert and Herbert (1999), although a similar effect called the "escalator illusion" was reported by Fraser and Wilcox (1979). A variant of the PDI was created by Kitaoka Akiyoshi and Ashida (2003) who took the continuous sawtooth luminance change, and reversed the intermediate greys. Kitaoka has created numerous variants of the PDI, and one called "rotating snakes" has become very popular. The latter demonstration has kindled great interest in the PDI.

Two images that exhibit peripheral drift illusion. The different pattern of light and dark causes the two circles to appear to rotate in opposite directions.

The illusion is easily seen when fixating off to the side of it, and then blinking as fast as possible. Most observers can see the illusion easily when reading text with the illusion figure in the periphery. The motion of such illusions is consistently perceived in a dark-to-light direction.

Two papers have been published examining the neural mechanisms involved in seeing the PDI (Backus & Oruç, 2005; Conway et al., 2005). Faubert and Herbert (1999) suggested the illusion was based on temporal differences in luminance processing producing a signal that tricks the motion system. Both of the articles from 2005 are broadly consistent with those ideas, although contrast appears to be an important factor (Backus & Oruç, 2005).

Rotating snakes edit

 
Illusion similar to Rotating Snakes

Rotating snakes is an optical illusion developed by Professor Akiyoshi Kitaoka in 2003.[1] A type of peripheral drift illusion, the "snakes" consist of several bands of color which resemble coiled serpents. Although the image is static, the snakes appear to be moving in circles. The speed of perceived motion depends on the frequency of microsaccadic eye movements (Alexander & Martinez-Conde, 2019).

Gallery edit

References edit

Inline citations edit

  1. ^ "Akiyoshi's illusion pages".

General references edit

  • Alexander, R. G., Martinez-Conde, S. (2019). Fixational eye movements. Eye Movement Research. Springer, Cham, 104–106, doi:10.1007/978-3-030-20085-5_3.
  • Backus, B. T., Oruç, İ. (2005). Illusory motion from change over time in the response to contrast and luminance. Journal of Vision, 5(11), 1055–1069, [1], doi:10.1167/5.11.10.
  • Conway, B. R., Kitaoka, A., Yazdanbakhsh, A., Pack, C. C., Livingstone, M. S. (2005). Neural basis for a powerful static motion illusion. Journal of Neuroscience, 25, 5651–5656.
  • Faubert, J., Herbert, A. M. (1999). The peripheral drift illusion: A motion illusion in the visual periphery. Perception, 28, 617–622.
  • Fraser, A., Wilcox, K. J. (1979). Perception of illusory movement. Nature, 281, 565–566.
  • Kitaoka. A., Ashida. H. (2003). Phenomenal characteristics of the peripheral drift illusion. Journal of Vision, 15, 261–262.

External links edit

  • Rotating snakes at Akiyoshi's illusion pages
  • Rotating rings at Sarcone's optical illusion pattern page
  • These patterns move, but it’s an illusion Archived 2013-09-01 at archive.today by Smithsonian Research Lab
  • Does your pet see Peripheral drift? a slideshow designed for testing on animals

peripheral, drift, illusion, peripheral, drift, illusion, refers, motion, illusion, generated, presentation, sawtooth, luminance, grating, visual, periphery, this, illusion, first, described, faubert, herbert, 1999, although, similar, effect, called, escalator. The peripheral drift illusion PDI refers to a motion illusion generated by the presentation of a sawtooth luminance grating in the visual periphery This illusion was first described by Faubert and Herbert 1999 although a similar effect called the escalator illusion was reported by Fraser and Wilcox 1979 A variant of the PDI was created by Kitaoka Akiyoshi and Ashida 2003 who took the continuous sawtooth luminance change and reversed the intermediate greys Kitaoka has created numerous variants of the PDI and one called rotating snakes has become very popular The latter demonstration has kindled great interest in the PDI Two images that exhibit peripheral drift illusion The different pattern of light and dark causes the two circles to appear to rotate in opposite directions The illusion is easily seen when fixating off to the side of it and then blinking as fast as possible Most observers can see the illusion easily when reading text with the illusion figure in the periphery The motion of such illusions is consistently perceived in a dark to light direction Two papers have been published examining the neural mechanisms involved in seeing the PDI Backus amp Oruc 2005 Conway et al 2005 Faubert and Herbert 1999 suggested the illusion was based on temporal differences in luminance processing producing a signal that tricks the motion system Both of the articles from 2005 are broadly consistent with those ideas although contrast appears to be an important factor Backus amp Oruc 2005 Contents 1 Rotating snakes 2 Gallery 3 References 3 1 Inline citations 3 2 General references 4 External linksRotating snakes edit nbsp Illusion similar to Rotating Snakes Rotating snakes is an optical illusion developed by Professor Akiyoshi Kitaoka in 2003 1 A type of peripheral drift illusion the snakes consist of several bands of color which resemble coiled serpents Although the image is static the snakes appear to be moving in circles The speed of perceived motion depends on the frequency of microsaccadic eye movements Alexander amp Martinez Conde 2019 Gallery edit nbsp Illusion similar to Primrose Field by Kitaoka Akiyoshi nbsp A peripheral drift illusion by Paul Nasca nbsp A peripheral drift illusion by Paul Nasca nbsp Combination of a Cafe wall illusion and a horizontal peripheral drift illusion nbsp A peripheral drift illusion giving a throbbing effectReferences editInline citations edit Akiyoshi s illusion pages General references edit Alexander R G Martinez Conde S 2019 Fixational eye movements Eye Movement Research Springer Cham 104 106 doi 10 1007 978 3 030 20085 5 3 Backus B T Oruc I 2005 Illusory motion from change over time in the response to contrast and luminance Journal of Vision 5 11 1055 1069 1 doi 10 1167 5 11 10 Conway B R Kitaoka A Yazdanbakhsh A Pack C C Livingstone M S 2005 Neural basis for a powerful static motion illusion Journal of Neuroscience 25 5651 5656 Faubert J Herbert A M 1999 The peripheral drift illusion A motion illusion in the visual periphery Perception 28 617 622 Fraser A Wilcox K J 1979 Perception of illusory movement Nature 281 565 566 Kitaoka A Ashida H 2003 Phenomenal characteristics of the peripheral drift illusion Journal of Vision 15 261 262 External links editRotating snakes at Akiyoshi s illusion pages Rotating rings at Sarcone s optical illusion pattern page These patterns move but it s an illusion Archived 2013 09 01 at archive today by Smithsonian Research Lab Does your pet see Peripheral drift a slideshow designed for testing on animals Retrieved from https en wikipedia org w index php title Peripheral drift illusion amp oldid 1190871597, wikipedia, wiki, book, books, library,

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