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Stephen A. Engel, David A. Remus, Rajiv Sainath; Motion from occlusion. Journal of Vision 2006;6(5):9. doi: 10.1167/6.5.9.
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Vision uses specific image features or cues to infer physical properties of the world. Here, we use a novel illusion to show that occlusion, traditionally thought of as a cue to depth, is also a powerful cue to motion. A display of stacking disks that contains only occlusion as a cue to depth generates a vivid sense of movement that is likely computed in early or middle levels of visual processing.
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