Motion aftereffect is a well-documented optical phenomenon where prolonged focus on a stationary pattern causes the visual ...

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Lightness perception, the visual system’s ability to maintain a stable representation of surface reflectance despite varying illumination, has long intrigued researchers. Central to this field is the ...

Our pick of the best optical illusions of all time will leave you amazed and confused in equal measure.

Medical imaging experts are adept at solving common optical illusions, according to research from four UK universities, including the University of East Anglia. The correct analysis of medical images ...

Most people use the terms “optical illusion” and “visual illusion” interchangeably, much like “fluid” and “liquid” or “sofa” and “couch” are synonyms. At first glance, this might be seemingly pedantic ...

Herman Melville, now celebrated for 'Moby-Dick,' endured a lifetime of struggle for recognition. His early adventures at sea ...

Have you ever looked at two circles of exactly the same size and sworn one was larger? If so, your eyes have been tricked by the Ebbinghaus illusion, a classic example of how context can shape what we ...

Optical illusions are great fun, and they fool virtually everyone. But have you ever wondered if you could train yourself to unsee these illusions? Our latest research suggests that you can. Optical ...

Chances are you’ve encountered some version of the “Ebbinghaus illusion,” in which a central circle appears to be smaller when encircled by larger circles and seems larger when surrounded by smaller ...

Delboeuf Illusion. The inner circle appears smaller when surrounded by a large circle than when surrounded by a small circle. Source: Drawing by Berit Brogaard When dentists drill holes in your teeth, ...