Document Detail

Infants' representations of three-dimensional occluded objects.
MedLine Citation:
PMID:  20926138     Owner:  NLM     Status:  MEDLINE    
Infants' ability to represent objects has received significant attention from the developmental research community. With the advent of eye-tracking technology, detailed analysis of infants' looking patterns during object occlusion have revealed much about the nature of infants' representations. The current study continues this research by analyzing infants' looking patterns in a novel manner and by comparing infants' looking at a simple display in which a single three-dimensional (3D) object moves along a continuous trajectory to a more complex display in which two 3D objects undergo trajectories that are interrupted behind an occluder. Six-month-old infants saw an occlusion sequence in which a ball moved along a linear path, disappeared behind a rectangular screen, and then a ball (ball-ball event) or a box (ball-box event) emerged at the other edge. An eye-tracking system recorded infants' eye-movements during the event sequence. Results from examination of infants' attention to the occluder indicate that during the occlusion interval infants looked longer to the side of the occluder behind which the moving occluded object was located, shifting gaze from one side of the occluder to the other as the object(s) moved behind the screen. Furthermore, when events included two objects, infants attended to the spatiotemporal coordinates of the objects longer than when a single object was involved. These results provide clear evidence that infants' visual tracking is different in response to a one-object display than to a two-object display. Furthermore, this finding suggests that infants may require more focused attention to the hidden position of objects in more complex multiple-object displays and provides additional evidence that infants represent the spatial location of moving occluded objects.
Rebecca J Woods; Teresa Wilcox; Jennifer Armstrong; Gerianne Alexander
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Infant behavior & development     Volume:  33     ISSN:  1934-8800     ISO Abbreviation:  Infant Behav Dev     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-06     Completed Date:  2011-03-23     Revised Date:  2013-07-03    
Medline Journal Info:
Nlm Unique ID:  7806016     Medline TA:  Infant Behav Dev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  663-71     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Inc. All rights reserved.
North Dakota State University, Child Development & Family Science, Fargo, ND 58108-6050, USA.
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MeSH Terms
Analysis of Variance
Attention / physiology*
Pattern Recognition, Visual / physiology*
Perceptual Closure / physiology*
Photic Stimulation / methods
Reaction Time / physiology
Grant Support

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

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