Document Detail


Stereo and motion Dmax in infants.
MedLine Citation:
PMID:  19761300     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
These experiments compared the maximum displacement and disparity limits (Dmax) for apparent motion and stereopsis in random-dot displays in adult and 12-28 week-old infant subjects. Both stereo and motion Dmax increased during development, from about 0.3 deg in the youngest infants to 2 deg in adults. Some of the younger infants (12-14 weeks) did not give a stereo threshold, probably because stereopsis had not yet developed; but otherwise, the values of Dmax in the two domains were close to each other throughout the age range. These results suggest that both stereo and motion Dmax are limited by some common factor. Possible factors include receptive field sizes and internal noise. Simulations in which these were varied showed that while changes in both could contribute to the development of Dmax, only an increase in receptive field size can fully account for the rise in Dmax with age.
Authors:
John Wattam-Bell
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-06-18
Journal Detail:
Title:  Journal of vision     Volume:  9     ISSN:  1534-7362     ISO Abbreviation:  J Vis     Publication Date:  2009  
Date Detail:
Created Date:  2009-09-18     Completed Date:  2009-12-14     Revised Date:  2014-02-19    
Medline Journal Info:
Nlm Unique ID:  101147197     Medline TA:  J Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  9.1-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Child Development
Depth Perception / physiology*
Humans
Infant
Motion Perception / physiology*
Photic Stimulation / methods
Reaction Time
Sensory Thresholds
Grant Support
ID/Acronym/Agency:
G0601007//Medical Research Council; G7908507//Medical Research Council

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


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