Optical illusions come in many forms, from horses and tigers to moving shapes and floating ships. They’re a fascinating demonstration of how our brain perceives images based on elements like ...

Some visual scientists think this is due to fixation jitter: eye movements that give the illusion that objects near what you’re focusing on are moving. Which of the two circles in the centre is ...

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.

you see that they're actually moving round in circles. Relative motion is behind many of our favourite optical illusions, and this is a great example. See it below and read on for more ...

Visual illusions of motion are a major source of interest in the vision research community. Explaining how a still image can produce an illusory perception of motion is important for a more ...