Akeelah extended her arm in front of her and then extended one of her fingers. she focused on that finger. next, she closed her left eye without moving her head; then she opened her left eye and closed her right eye without moving her head. she noticed that her finger seemed to shift as she alternated between the two eyes because of the slightly different view each eye had of her finger. what is illustrated by this example?
Question: Akeelah extended her arm in front of her and then extended one of her fingers. she focused on that finger. next, she closed her left eye without moving her head; then she opened her left eye and closed her right eye without moving her head. she noticed that her finger seemed to shift as she alternated between the two eyes because of the slightly different view each eye had of her finger. what is illustrated by this example?
This example illustrates retinal disparity or binocular disparity. Retinal disparity occurs when two eyes view the same scene, but because they are separated by distance, they each receive a slightly different image. This phenomenon is responsible for the sense of depth perception in humans and many other animals, as the difference between the two images allows the brain to estimate the relative distance of objects in a scene.
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