| The effect of light adaptation on scotopic spatial summation in 10-week-old infants. | |
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MedLine Citation:
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PMID: 1574853 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Psychophysical area-intensity functions of individual 10-week-old human infants and adults were obtained in the dark adapted state, and in the presence of a steady background that elevated threshold 1 log unit above the dark adapted level. For dark adapted infants, the mean diameter for complete spatial summation (4.42 degrees; SD: 1.67 degrees) was significantly larger than that of adults (2.32 degrees; SD: 0.09 degrees). The background reduced the mean critical diameter to 2.67 degrees for infants (SD: 0.64 degrees) and to 1.16 degrees for adults (SD: 0.08 degrees). Spatial probability summation has similar effects on infant and adult thresholds, and, therefore, does not appear to account for the developmental decrease in critical diameters. Rather, decreases in receptive field size are suspected. |
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Authors:
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R M Hansen; R D Hamer; A B Fulton |
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2486493 - The role of structure in infant visual pattern perception. 15781073 - Motion detection in normal infants and young patients with infantile esotropia. 11085253 - Optimal care patterns in pediatric patients with dysphagia. |
Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Vision research Volume: 32 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 1992 Feb |
Date Detail:
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Created Date: 1992-06-03 Completed Date: 1992-06-03 Revised Date: 2007-11-14 |
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: 387-92 Citation Subset: IM; S |
Affiliation:
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Department of Ophthalmology, Children's Hospital, Boston, MA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Ocular
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physiology* Dark Adaptation / physiology Differential Threshold Psychophysics Retina / physiology* Visual Fields Visual Perception / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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EY 05325/EY/NEI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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