When most people stare first at a blue circle and then shift their eyes to a white surface,the afterimage of the circle appears
A) yellow.
B) red.
C) green.
D) blue.

Question

Quizplus · Accepted Answer

When people stare at a blue object and then look away at a white surface, the afterimage appears yellow. This is due to the opponent-process theory of color vision, which suggests that colors are perceived in opposing pairs: blue-yellow, red-green, and black-white. After staring at one color for a while, the eye's response to that color can become temporarily fatigued, causing the opposite color in the pair to be perceived in the afterimage.

When Most People Stare First at a Blue Circle and Then