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Neuron, Vol. 24, 433441, October, 1999, Copyright 1999 by Cell Press Motion-Based Mechanisms

Summary: Neuron, Vol. 24, 433441, October, 1999, Copyright 1999 by Cell Press
Motion-Based Mechanisms
of Illusory Contour Synthesis
1972; Rock and Anson, 1979). However, subsequent
physiological evidence has indicated that the illusory
contour sensitivity may originate as early as area V2 in
Barton L. Anderson* and Hilary C. Barth
Department of Brain and Cognitive Sciences
Massachusetts Institute of Technology
Cambridge, Massachusetts 02139 macaque monkeys (von der Heydt et al., 1984; Redies
et al., 1986; Grosof et al., 1993), providing evidence that
illusory contours arise from neural interactions early in
the visual processing stream. To provide insight into theSummary
mechanisms responsible for illusory contour synthesis,
a number of studies have been performed to determineNeurophysiological studies and computational mod-
els of illusory contour formation have focused on con- the stimulus properties that constrain the perceived clar-
ity and shape of illusory surfaces. It is now known thattour orientation as the underlying determinant of illu-
sory contour shape in both static and moving displays. image properties such as inducer extent and proximity
(Dumais and Bradley, 1976; Siegel and Petry, 1991;Here, we report a class of motion-induced illusory
contours that demonstrate the existence of novel Shipley and Kellman, 1992a; Lesher and Mingolla, 1993),


Source: Anderson, Barton L. - School of Psychology, University of Sydney


Collections: Biology and Medicine