Hold your hand a few feet away from your face. Now alternate between looking at your hand with only your right eye and then only with your left eye. You will notice that each eye has a slightly different view of your hand and the scene behind it. Special detection cells in your brain tuned to ______________ allow your brain to extract depth information from the visual scene, thus informing where your hand is in relation to the stuff behind it.

Question

Quizplus · Accepted Answer

Binocular disparity refers to the difference in image location of an object seen by the left and right eyes, resulting from the eyes’ horizontal separation. The brain uses this disparity to extract depth information from the visual scene, enabling us to perceive three-dimensional structure and distance.

Hold Your Hand a Few Feet Away from Your Face