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| Research article summary (published 30 Dec 2002): |
Time course of perceptual grouping by color.
Full Abstract
Does perceptual grouping operate early or late in visual processing? One position is that the elements in perceptual layouts are grouped early in vision, by properties of the retinal image, before perceptual constancies have been determined. A second position is that perceptual grouping operates on a postconstancy representation, one that is available only after stereoscopic depth perception, lightness constancy, and amodal completion have occurred. The present experiments indicate that grouping can operate on both a preconstancy representation and a postconstancy representation. Perceptual grouping was based on retinal color similarity at short exposure durations and based on surface color similarity at long durations. These results permit an integration of the preconstancy and postconstancy positions with regard to grouping by color.
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Author information
Author/s: Schulz, Melissa F (MF); Sanocki, Thomas (T);
Affiliation: University of South Florida, Tampa 33620-7200, USA. mschulz(-atsign-)mail.usf.edu
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: Psychological science : a journal of the American Psychological Society / APS (Psychol Sci), published in United States. (Language: eng)
Reference: 2003-Jan; vol 14 (issue 1) : pp 26-30
Dates: Created 2003/02/04; Completed 2003/03/03; Revised 2006/11/15;
PMID: 12564750, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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