Random-dot stereograms are used to show that the perception of stereopsis occurs before objects are recognized.

Question

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Random-dot stereograms use randomly placed dots to create a 3D image. The perception of depth and 3D space occurs before the brain recognizes the objects within the image. This suggests that stereopsis, or the ability to perceive depth through binocular vision, occurs before object recognition.

Random-Dot Stereograms Are Used to Show That the Perception of Stereopsis