Document Detail

A competition model of exogenous orienting in 3.5-month-old infants.
MedLine Citation:
PMID:  9514768     Owner:  NLM     Status:  MEDLINE    
Four experiments are reported on exogenous (stimulus-driven) orienting in 3.5-month-old infants. A small moving bar embedded in a field of static bars was used to draw the infant's attention to one side of the display or the other. The bars could be either red or green. In all four of these experiments sensitivity to this small moving bar was affected significantly by how unevenly the red and green bars were distributed across the visual field. Sensitivity to the moving bar was lower when most of the red bars were in the field contralateral to this probe suggesting competition between the motion stimulus and contralaterally placed red but not green bars on a small, but significant proportion of trials. This basic effect replicated in four separate experiments and depended coarsely on how unevenly the red and the green bars were distributed across the field. A competition model of exogenous orienting with a winner-take-all rule captured the most important features of the data. The distribution of color within the visual field can bias attention significantly at 3.5 months making it either more or less likely that an infant will detect a moving stimulus.
J L Dannemiller
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of experimental child psychology     Volume:  68     ISSN:  0022-0965     ISO Abbreviation:  J Exp Child Psychol     Publication Date:  1998 Mar 
Date Detail:
Created Date:  1998-05-28     Completed Date:  1998-05-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  2985128R     Medline TA:  J Exp Child Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  169-201     Citation Subset:  IM    
Copyright Information:
Copyright 1998 Academic Press.
Department of Psychology, University of Wisconsin, Madison 53706, USA.
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MeSH Terms
Attention / physiology*
Child Development / physiology*
Child Psychology*
Color Perception / physiology
Models, Psychological*
Signal Detection, Psychological / physiology
Visual Fields / physiology
Grant Support

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