Polystable illusions have been of interest to psychologists for a long time. Polystable illusions are typically still or moving images that observers may experience as having more than one ...

This is bi-stable visual stimuli used for awareness studies. Left diagram shows a classical example, the Necker cube, where the surface depth perception switches over time. On the right, a binocular ...

Sometimes, optical illusions are nothing more than interesting, with no real insight into you as a person. These visual perceptions can transform human faces into aliens, confuse you by simply turning ...