The hidden face of Kanizsa's triangle: apparent movement of subjective figures in three-dimensional space.
Several demonstrations on the apparent movement in depth of subjective figures are presented. They include: (a) apparent rotational movement as a result of shape invariance or rigidity; (b) apparent rotational movement with three-dimensional subjective figures not accompanied by a brightness gradient; and (c) apparent rotational movement by kinetic occlusion.
Vallortigara
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Dipartimento di Psicologia Generale, Universitá di Padova, Italy.
D003867:Depth Perception; D005556:Form Perception; D006801:Humans; D009039:Motion Perception; D009903:Optical Illusions; D012399:Rotation