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Chubb illusion

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An example of the Chubb illusion. The two central grey squares are identical in shade.
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An example of the Chubb illusion. The two central grey squares are identical in shade.

The Chubb illusion is an optical illusion wherein the apparent brightness (luminosity) of an object varies dramatically, depending on the context of the presentation.[1] For instance, a dark object surrounded by darker objects may appear brighter than an actually brighter object, surrounded by even brighter objects.[2] This was observed and documented by Chubb and colleagues in 1989.[3]

[edit] References

  1. ^ Lotto, R.B., & Purves, D. (2001). An empirical explanation of the Chubb Illusion [Abstract]. Journal of Vision, 1(3), 48a, http://journalofvision.org/1/3/48/, doi:10.1167/1.3.48.
  2. ^ Lotto RB, Purves D. "An empirical explanation of the Chubb illusion." J Cogn Neurosci. 2001 Jul 1;13(5):547-55. PMID 11506656.
  3. ^ Chubb C, Sperling G, Solomon JA. "Texture interactions determine perceived contrast." Proc Natl Acad Sci U S A. 1989 Dec;86(23):9631-5. PMID 2594791.

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