Document Detail


Electrophysiologic signs of auditory distraction in elderly listeners.
MedLine Citation:
PMID:  10741355     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Brain mapping was used to investigate the ability of young and elderly female listeners to attend to /ga/ syllabic events at one ear in the presence of speech babble competition at the opposite ear. An oddball stimulus presentation paradigm was used to record the N1 and P2 components of the late auditory evoked potential (LAEP) from 19 scalp locations. With speech competition, elderly listeners exhibited significantly larger reductions in P2 amplitude than did young listeners. The competition produced no changes in N1 amplitude in either group. These findings contrast with those of an earlier study in which age-related reductions in N1 but not P2 amplitude were found when listeners attended to tones rather than speech stimuli in the presence of speech competition. These studies suggest that amplitude reductions in different LAEP components may provide electrophysiologic indices of age-related breakdowns in processing sounds in the presence of competition. Which LAEP components are affected may depend on experimental variables such as task difficulty or the nature of the stimuli (e.g., speech vs nonspeech).
Authors:
A L Fisher; M R Hymel; J L Cranford; A R DeChicchis
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of the American Academy of Audiology     Volume:  11     ISSN:  1050-0545     ISO Abbreviation:  J Am Acad Audiol     Publication Date:  2000 Jan 
Date Detail:
Created Date:  2000-05-02     Completed Date:  2000-05-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9114646     Medline TA:  J Am Acad Audiol     Country:  CANADA    
Other Details:
Languages:  eng     Pagination:  36-45     Citation Subset:  IM    
Affiliation:
Department of Communication Sciences and Disorders, East Carolina University, Greenville, North Carolina 27858, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Age Factors
Aged
Aging / physiology*
Attention / physiology*
Brain Mapping
Cerebral Cortex / physiology
Event-Related Potentials, P300 / physiology*
Evoked Potentials, Auditory / physiology*
Female
Humans
Middle Aged
Speech Perception / physiology*
Comments/Corrections
Comment In:
J Am Acad Audiol. 2000 Jan;11(1):1p preceding 1   [PMID:  10741351 ]

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


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