Olivier Redon holds up one of his optical illusions that is designed to look like a creature whose eyes and head follow the viewer as they move about, at his home in Portola Valley on June 24, 2024.

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Medical imaging experts are adept at solving common optical illusions, according to new research. The research is the first to show that people can be trained to do better at solving visual illusions, ...

Optical illusions don’t just fool your eyes—they expose how your brain interprets reality. This video explores five powerful visual illusions that seem impossible at first glance, even when you know ...

Optical illusions play tricks on your brain and can make you see things that aren't really there, from static images swirling around the page to images that stay with you even after you look away.

Everyone loves an optical illusion — even if they leave us completely stumped — and they're all around us in the natural world. From an underwater waterfall in the Indian Ocean to a surrealist scene ...

A study of mice starts to unravel how the brain gets tricked by this kind of optical illusion, and it gives clues about how visual perception works. Optical illusions play on the brain's biases, ...

In this Ebbinghaus illusion of relative size perception, the orange circle on the left looks bigger than the one on the right - but it is actually 10 per cent smaller. In a new study, medical imaging ...