| Motion processing asymmetries and stereopsis in infants. | |
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MedLine Citation:
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PMID: 12831758 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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These experiments used forced-choice preferential looking to test infants for preferences between pairs of random-dot patterns that moved in opposite directions. With monocularly-viewed horizontally moving patterns, 6-12-week-old infants showed a preference for nasalwards motion. With binocularly-viewed vertical motion, there was no overall preference, but the results did show a significant correlation between upwards bias of OKN and preference for downwards motion. In a longitudinal experiment, the nasalwards preference first appeared at 7-8 weeks, and thereafter persisted until the end of testing (23-25 weeks). In this experiment the infants were also tested for stereopsis, under conditions that were as nearly as possible identical to the direction preference test. There was no evidence that the onset of stereopsis had any effect on the directional asymmetry. The directional asymmetries revealed by these experiments appear to be distinct from the asymmetries of OKN and motion VEPs. It is possible that they reflect asymmetrical directional responses in extrastriate visual cortex (e.g. area V5/MT). |
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Authors:
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John Wattam-Bell |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Vision research Volume: 43 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 2003 Aug |
Date Detail:
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Created Date: 2003-06-30 Completed Date: 2003-08-12 Revised Date: 2009-11-03 |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: England |
Other Details:
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Languages: eng Pagination: 1961-8 Citation Subset: IM |
Affiliation:
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Visual Development Unit, Department of Psychology, University College London, London WCIE 6BT, 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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Child Child, Preschool Depth Perception / physiology* Eye Movements / physiology Female Humans Infant Infant, Newborn Male Motion Perception / physiology* Nystagmus, Physiologic* Photic Stimulation Visual Pathways / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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