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, ...

In this mind-bending puzzle, there are three numbers that are visible - 21, 22, and 23. But there is a third number in this ...

The peripheral drift illusion causes us to perceive motion in a still image. A new study shows that the mechanism of this illusion relies on changes in pupil size.

In our today’s optical illusion challenge, a pattern of "73" and "37" hides a single odd pair—"53." Can you spot it? This tricky test challenges visual perception and cognitive skills.