Document Detail


Comparison of pattern VEPs and preferential-looking behavior in 3-month-old infants.
MedLine Citation:
PMID:  3972516     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Studies of visual acuity in human infants between 1 and 6 months of age using the visual-evoked potential (VEP) and forced-choice preferential looking (FPL) have shown that acuity is one to two octaves higher by VEP estimates than by FPL estimates. In an attempt to study these differences, the authors obtained both VEP and FPL data from 26 3-month-old infants. VEP data were obtained with gratings of 0.31, 0.62, 1.25 and 2.50 cycles/deg, which were counterphase alternated at 2 Hz. FPL data were obtained for stationary gratings using either the method of constant stimuli or a staircase procedure. Our study revealed three major findings: (1) recordable VEPs can be obtained for spatial patterns that are below threshold by behavioral measures; (2) the use of different scoring criteria that yields comparable VEP and FPL group mean acuities does not yield a significant correlation between VEP amplitude acuity and FPL acuity for individual infants, probably because of the inherent "noise" in each technique; and (3) when VEP latency rather than amplitude is used to estimate acuity, there is a significant correlation between electrophysiology and behavior.
Authors:
S Sokol; A Moskowitz
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Investigative ophthalmology & visual science     Volume:  26     ISSN:  0146-0404     ISO Abbreviation:  Invest. Ophthalmol. Vis. Sci.     Publication Date:  1985 Mar 
Date Detail:
Created Date:  1985-04-17     Completed Date:  1985-04-17     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7703701     Medline TA:  Invest Ophthalmol Vis Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  359-65     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Discrimination (Psychology) / physiology*
Evoked Potentials, Visual*
Humans
Infant*
Pattern Recognition, Visual
Vision, Ocular / physiology
Visual Acuity*
Grant Support
ID/Acronym/Agency:
NEI 00926//PHS HHS

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


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