Document Detail

The development of depth perception from motion parallax in infancy.
MedLine Citation:
PMID:  19304609     Owner:  NLM     Status:  MEDLINE    
Little is known about infants' perception of depth from motion parallax, even though it is known that infants are sensitive both to motion and to depth-from-motion cues at an early age. The present experiment assesses whether infants are sensitive to the unambiguous depth specified by motion parallax and, if so, when this sensitivity first develops. Eleven infants were followed longitudinally from 8 to 29 weeks. Infants monocularly viewed a translating Rogers and Graham (1979) random-dot stimulus, which appears as a corrugated surface to adult observers. Using the infant-control habituation paradigm, looking time was recorded for each 10-sec trial until habituation, followed by two test trials: one using a depth-reversed and one using a flat stimulus. Dishabituation results indicate that infants may be sensitive to unambiguous depth from motion parallax by 16 weeks of age. Implications for the developmental sequence of depth from motion, stereopsis, and eye movements are discussed.
Elizabeth Nawrot; Sherryse L Mayo; Mark Nawrot
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Attention, perception & psychophysics     Volume:  71     ISSN:  1943-3921     ISO Abbreviation:  Atten Percept Psychophys     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2009-03-23     Completed Date:  2009-04-20     Revised Date:  2011-02-24    
Medline Journal Info:
Nlm Unique ID:  101495384     Medline TA:  Atten Percept Psychophys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  194-9     Citation Subset:  C; IM    
Department of Psychology, Minnesota State University, Moorhead, Minnesota 56563, USA.
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MeSH Terms
Age Factors
Child Psychology*
Depth Perception*
Discrimination Learning
Habituation, Psychophysiologic
Motion Perception*
Pattern Recognition, Visual*
Vision, Binocular

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

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