For over a minute,Laura has been staring at an image with seemingly random areas of white-on-black.When she shifts her gaze from the original image to a white wall,she suddenly sees an image of Jesus on the wall.Which of the following explains this phenomenon?
A) Photoreceptors in the retina have become fatigued.
B) Photoreceptors in the lateral geniculate nucleus have become fatigued.
C) negative afterimage
D) positive afterimage

Question

Quizplus · Accepted Answer

Negative afterimages occur when the photoreceptors in the retina become fatigued after being exposed to a bright light or image. When the eyes are then shifted to a white surface, the fatigued photoreceptors do not respond as strongly to the light, resulting in an afterimage of the original image in negative colors.

For Over a Minute,Laura Has Been Staring at an Image