Panum’s fusional area
psychology
Quick Summary
Panum's fusional area is a concept in binocular vision related to depth perception. It refers to the region on one retina where any point within it can fuse with a single corresponding point on the other retina. This fusion of slightly different images from each eye allows the brain to perceive depth and three-dimensional space. If the disparity between the images is too large, fusion fails, and double vision occurs. This area is crucial for stereoscopic vision, enabling us to perceive the world in three dimensions.1
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