From colour-changing fire trucks to 'The Dress', many optical illusions have baffled the internet over the years. Now, a scientist from Harvard Medical School has discovered an illusion that might be ...

This brain-frazzling optical illusion is enough to put your head into a spin. The purple-and-yellow image looks as though it’s both three-dimensional and moving but is in fact stationary and flat.

The caption of the viral post claims the creator of the illusion is a Japanese neurologist, and apparently the design stays ...

A head-scratching optical illusion challenges the perception of color and how the brain plays tricks on us. In an image created by the UK contact lens vendor Lenstore, a series of lilac letters ...

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How optical illusions work has been long-debated among scientists and philosophers, who wonder whether these illusions stem from neural processing in the eye or involve higher-level cognitive ...