Colleen stares at a fixed spot in her bedroom using only one eye. After a while, what might happen to her vision?
A) Any small object that crosses her visual field very slowly may at one point briefly disappear.
B) Any object that she focuses on will begin to rotate, first clockwise, then counterclockwise.
C) Objects will become more focused the longer she looks at them.
D) Objects will become more distorted the longer she looks at them.

Question

Quizplus · Accepted Answer

This phenomenon is related to the concept of the "blind spot" in human vision, where the optic nerve exits the eye; there are no photoreceptor cells in this spot, making it insensitive to light. Additionally, when staring at a fixed spot without moving the eyes, the constant unchanging stimulus can cause neurons in the visual system to stop responding, leading to a temporary disappearance of objects from vision, especially if they move slowly across the visual field. This is also related to sensory adaptation, where constant stimulation leads to decreased sensitivity.

Colleen Stares at a Fixed Spot in Her Bedroom Using