Document Detail

Limitations on the parallel guidance of visual search: color x color and orientation x orientation conjunctions.
MedLine Citation:
PMID:  2148599     Owner:  NLM     Status:  MEDLINE    
In visual search for a conjunction it is much more difficult to search for the conjunction of 2 colors or 2 orientations than for Color x Orientation or Color x Shape conjunctions. The result is not limited to particular colors or shapes. Two colors cannot occupy the same spatial location in Color x Color searches. However, Experiments 6 and 7 show that Color x Shape searches remain efficient even if the color and shape are spatially separated. Our guided search model suggests that in searches for Color x Shape, a parallel color module can guide attention toward the correct color, whereas the shape module guides attention toward the correct shape. Together these 2 sources of guidance lead attention to the target. However, if a target is red and green among red-blue and green-blue distractors, it is not possible to guide search independently toward red items and green items or away from all blue items.
J M Wolfe; K P Yu; M I Stewart; A D Shorter; S R Friedman-Hill; K R Cave
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of experimental psychology. Human perception and performance     Volume:  16     ISSN:  0096-1523     ISO Abbreviation:  J Exp Psychol Hum Percept Perform     Publication Date:  1990 Nov 
Date Detail:
Created Date:  1991-02-19     Completed Date:  1991-02-19     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7502589     Medline TA:  J Exp Psychol Hum Percept Perform     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  879-92     Citation Subset:  IM    
Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge 02139.
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MeSH Terms
Color Perception*
Pattern Recognition, Visual*
Perceptual Masking
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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