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2. Ambiguous image - Wikipedia

   en.wikipedia.org/wiki/Ambiguous_image

   Although there is no complete image to be seen, the brain is able to accomplish this because of its understanding of the physical world and real incidents of ambiguous lighting. [6] In ambiguous images, an illusion is often produced from illusory contours. An illusory contour is a perceived contour without the presence of a physical gradient.

3. Optical illusion - Wikipedia

   en.wikipedia.org/wiki/Optical_illusion

   Ambiguous illusions are pictures or objects that elicit a perceptual "switch" between the alternative interpretations. The Necker cube is a well-known example; other instances are the Rubin vase and the "squircle", based on Kokichi Sugihara's ambiguous cylinder illusion. [18] Distorting or geometrical-optical illusions are characterized by ...

4. Kokichi Sugihara - Wikipedia

   en.wikipedia.org/wiki/Kokichi_Sugihara

   Kōkichi Sugihara (Japanese: 杉原厚吉, born June 29, 1948, in Gifu Prefecture) [1] [2] is a Japanese mathematician and artist [3] known for his three-dimensional optical illusions that appear to make marbles roll uphill, [4] [5] pull objects to the highest point of a building's roof, [6] and make circular pipes look rectangular. [7]

5. Multistable perception - Wikipedia

   en.wikipedia.org/wiki/Multistable_perception

   Examples of visually ambiguous patterns. From top to bottom: Necker cube, Schroeder stairs and a figure that can be interpreted as black or white arrows. Multistable perception (or bistable perception) is a perceptual phenomenon in which an observer experiences an unpredictable sequence of spontaneous subjective changes.

6. List of optical illusions - Wikipedia

   en.wikipedia.org/wiki/List_of_optical_illusions

   An isometric illusion (also called an ambiguous figure or inside/outside illusion) is a type of optical illusion, specifically one due to multistable perception. Jastrow illusion The Jastrow illusion is an optical illusion discovered by the American psychologist Joseph Jastrow in 1889.

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   mail.aol.com

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8. We found 14 personalized gifts from Walmart that look more ...

   www.aol.com/lifestyle/we-found-14-personalized...

   Personalized gifts don't have to be expensive or purchased months in advance. Give a thoughtful gift from Walmart this year, starting at just $5.

9. The dress - Wikipedia

   en.wikipedia.org/wiki/The_dress

   The neuroscientist and psychologist Pascal Wallisch states that while inherently ambiguous stimuli have been known to vision science for many years, this is the first such stimulus in the colour domain that was brought to the attention of science by social media. He attributes differential perceptions to differences in illumination and fabric ...