When two stationary visual objects appear in alternating sequence, they evoke the perception of a single object moving back and forth between them. This is known as stroboscopic or apparent motion and ...

Vision is a constructive process. For example, a square, flashed at two distinct locations one after the other, appears to move smoothly between the two locations rather than as two separate flashes ...

In 350 BC, Aristotle reported seeing illusory movement after staring at a constantly moving stimulus. Later coined the "waterfall illusion," scientists are still investigating the properties of motion ...