Document Detail

Aerodynamic, acoustic, and perceptual measures of nasality following traumatic brain injury.
MedLine Citation:
PMID:  10230529     Owner:  NLM     Status:  MEDLINE    
Data were obtained from 31 subjects who had incurred a traumatic brain injury (TBI). Two expert listeners judged nasality using direct magnitude estimation with a referent. They rated samples of the first sentence of the Rainbow Passage, played backwards, with all pauses removed. Sensitivity was good for nasalance, velopharyngeal airway resistance, and velopharyngeal orifice area, indicating that these measures would accurately identify an individual as nasal. Specificity was reduced, and was adequate only for nasalance. The reduced specificity was due to a high number of false positives, i.e. perceived nasality in the absence of objective corroboration. Analysis of the false positives revealed that a slow speaking rate could mislead a listener's perception of nasality. Overall, for individuals with dysarthria following TBI, the measure of nasalance may most accurately reflect listener perception of nasality.
M A McHenry
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Brain injury     Volume:  13     ISSN:  0269-9052     ISO Abbreviation:  Brain Inj     Publication Date:  1999 Apr 
Date Detail:
Created Date:  1999-07-06     Completed Date:  1999-07-06     Revised Date:  2014-11-14    
Medline Journal Info:
Nlm Unique ID:  8710358     Medline TA:  Brain Inj     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  281-90     Citation Subset:  IM    
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MeSH Terms
Brain Injuries / complications*
Dysarthria / diagnosis*,  etiology*
Sensitivity and Specificity
Speech Intelligibility
Voice Quality*

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

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