Perception

Color Reversal

COLOR REVERSAL shows the interesting effect that occurs when color receptors in the eye become fatigued. The opening in a rotating black wheel reveals a picture of a red tree with a green background. If the wheel spins in one direction, the picture is followed by a white card. In the other direction, the picture is followed by black. If white follows the picture quickly, the user sees a green afterimage as the color receptors in the eye become fatigued (white minus red equals green). If the black follows the tree, the afterimage remains red.



ck