| Stereo and motion Dmax in infants. | |
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MedLine Citation:
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PMID: 19761300 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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John Wattam-Bell |
Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't Date: 2009-06-18 |
Journal Detail:
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Title: Journal of vision Volume: 9 ISSN: 1534-7362 ISO Abbreviation: J Vis Publication Date: 2009 |
Date Detail:
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Created Date: 2009-09-18 Completed Date: 2009-12-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101147197 Medline TA: J Vis Country: United States |
Other Details:
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Languages: eng Pagination: 9.1-9 Citation Subset: IM |
Affiliation:
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Department of Developmental Science, University College London, London, UK. j.wattam-bell@ucl.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Child Development Depth Perception / physiology* Humans Infant Motion Perception / physiology* Photic Stimulation / methods Reaction Time Sensory Thresholds |
| Grant Support | |
ID/Acronym/Agency:
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G7908507//Medical Research Council |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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