COMPUTERS CAN calculate at staggering speed, but they cannot match the human visual system's uncanny ability to assemble a coherent picture from ambiguous fragments in an image. The brain seems to ...

Neuroscientists have identified the location in the brain's visual cortex responsible for generating a common perceptual illusion: Seeing shapes and surfaces that don't really exist when viewing a ...

An animation that appears to have illusory contours was awarded second place in the contest. Created by Bart Anderson at the University of Sydney, Australia, it’s made up of four circles and four dots ...

Because the left and right eyes are set apart, points in the scene are projected to slightly different locations on the two eyes' retinal images. Disparity is defined as the vector difference in ...

The logo of the 1984 Los Angeles Olympics includes red, white and blue stars, but the white star is not really there: It is an illusion. Similarly, the "S" in the USA Network logo is wholly illusory.