Motion perception plays a fundamental role in our daily visual experience; it is critical for computing the speed and direction of moving objects and controlling our own body and eye movements. Motion ...

Hallucinogen persisting perception disorder (HPPD) is a rare medical condition that can cause visual disturbances (sometimes called flashbacks) if you’ve taken hallucinogenic drugs in the past. With ...

The brain has an astonishing capacity to detect patterns in the world. So much so, that it will often create patterns where none exist. Pareidolia is the tendency to see familiar shapes in random ...