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The level of filling-in and when it is cognitive

Published online by Cambridge University Press:  01 December 1998

Richard L. Gregory
Affiliation:
Department of Experimental Psychology, University of Bristol, Bristol BS8 1TN United Kingdomrichard.gregory@bris.ac.uk

Abstract

This informative and conceptually stimulating target article is very useful. I merely query whether the term “illusory contours” is appropriate for gap filling; “illusory surfaces” seems better – and “fictional surfaces” better still. These seem to be rule based rather than knowledge based, suggesting indeed the importance of distinguishing rules (analogous to syntax in language) from knowledge (equivalent to semantics) for classifying perceptual phenomena.

Type
Open Peer Commentary
Copyright
© 1998 Cambridge University Press

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