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.

Today’s collection of mind-bending optical illusions and confusing-perspective photos is here to give your brain a workout.

We have a picture given below, which is of two images that look pretty much the same. However, they are not the same and have ...

Believe it or not, we've seen a few optical illusions in space over the year. Well, we haven't seen them – the Hubble ...