Neuroscientists have discovered how the brain distinguishes between visual motion occurring in the external world from that caused by the observer moving through it. Known as the 'motion-source ...

Why the flow of sand creates a calming visual effect demonstrates smooth motion and visual appeal. Man does DNA test on ...

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 ...