For millennia, people have used mind-altering techniques to achieve different states of consciousness, envision spiritual figures, connect with nature, or simply for the fun of it. Psychedelic ...

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 ...

Visual illusions are fascinating visual phenomena that make our brains perceive something different from reality. Visual illusions can deceive our visual system into seeing things that aren’t actually ...

A spectral figure has emerged from the solar surface during this Halloween period. This cosmic optical illusion, captured by NASA's space observatory, reveals a face with luminous features standing ...