Document Detail


Sensory visual loss and cognitive deficits in the selective attentional system of normal infants and neurologically impaired children.
MedLine Citation:
PMID:  2286306     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The ability of infants to shift their gaze laterally from a central target (fixation shift) was investigated in normal one- and three-month-old infants in two visual tasks; competition (central fixating stimulus remained visible while peripheral target was presented) and non-competition (central fixating stimulus replaced by peripheral target). The younger infants were significantly more disrupted by the competition condition, in terms of latency to refixate and direction of first eye movement. An immature attention system is proposed to explain this affect. In addition, visually evoked potentials in response to comparable stimuli were easier to elicit in older infants, suggesting that the one-month-olds possessed more immature sensory and perceptual visual systems, as well as poorer neural systems for controlling selective attention. Both techniques have been applied to a group of neurologically impaired children, and the results indicate that the tests may be useful in distinguishing sensory loss from attentional impairments in these patients.
Authors:
B Hood; J Atkinson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Developmental medicine and child neurology     Volume:  32     ISSN:  0012-1622     ISO Abbreviation:  Dev Med Child Neurol     Publication Date:  1990 Dec 
Date Detail:
Created Date:  1991-03-27     Completed Date:  1991-03-27     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0006761     Medline TA:  Dev Med Child Neurol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1067-77     Citation Subset:  IM    
Affiliation:
Department of Experimental Psychology, University of Cambridge.
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MeSH Terms
Descriptor/Qualifier:
Anisometropia / diagnosis
Attention*
Child, Preschool
Evoked Potentials, Visual
Female
Fixation, Ocular*
Humans
Infant
Male
Nervous System Diseases / diagnosis*
Nystagmus, Pathologic / diagnosis
Reference Values
Strabismus / diagnosis
Vision Disorders / diagnosis*
Visual Fields*

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


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