Perceptual filling in

Ramachandran , V.S. and Gregory, R.L. (1991) "Perceptual filling in of artificially induced scotomas in human vision." Nature. 350, 6320, 699-702.

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... filling in can occur separately for colour and texture, suggesting separate mechanisms; the filling-in process does not completely suppress information from the scotoma, even after an image has faded completely from consciousness – it can nevertheless contribute to motion perception; and the process can be strongly influenced by illusory contours.