Motion induced blindness

Motion induced blindness

Motion Induced Blindness (MIB) is a phenomenon of visual disappearance or perceptual illusions in which salient visual stimuli disappear as if erased in front of an observer's eyes. In a popular demonstration,[1] the observer looks at one of three bright yellow spots arranged at the corners of an imaginary equilateral triangle on a black background while many, smaller, blue dots move swirlingly on the background. The observer needs to pay attention to the yellow dots away from the one looked at. After about 10 seconds or so, the observer sees one or both of the other yellow dots disappear for a second or so and then reappear. These disappearances and reappearances continue at random for as long as the observer cares to look.

Motion-induced blindness was discovered by Ramachandran and Gregory in 1991.[2] It was named by Bonneh, Cooperman, and Sagi in 2001.[1]

A very similar phenomena is Troxler's fading (discovered by Troxler in 1804), in which an object away from where one is looking disappears and reappears irregularly without any necessity for a moving background.

Other similar phenomena in which salient stimuli disappear and reappear include binocular rivalry (discovered by Porta in 1593),[3] monocular rivalry (discovered by Breese in 1899),[4] and flash suppression.

References

  1. ^ a b Bonneh, Y. S., Cooperman, A., & Sagi, D. (2001). Motion-induced blindness in normal observers. Nature, 411, 798-801.
  2. ^ Ramachandran, V. S., & Gregory, R. L. (1991). Perceptual filling in of artificially induced scotomas in human vision. Nature, 350, 699-702.
  3. ^ Porta, J. B. (1593). De refractione. Optices parte. Libri novem. Naples: Salviani.
  4. ^ Breese, B. B. (1899). On inhibition. Psychological Monographs, 3, 1-65.

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