For example, an image might look like two faces or a vase depending on how you interpret it. Physiological Illusions: These are caused by overstimulation of the visual system, such as excessive ...

These rely on how the brain subconsciously interprets information. Examples include illusions like the Müller-Lyer illusion, ...

Like optical illusions, they reveal a little about how we process the world—and remind us that things aren’t always as they seem. Here are five that will have you questioning your grammatical ...

This picture — known to change from profile faces into a vase and back again — is often considered unusual. It really provides clues to how the eyes and the brain work together in normal vision.