The spinning horse illusion is one of the cleaner optical tricks in the short-form video space — a silhouette rotating in a single direction that the brain can interpret as going either left or right ...

Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...

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 complete ...