Document Detail

Analysis of abnormal articulatory dynamics in two dysarthric patients.
MedLine Citation:
PMID:  633876     Owner:  NLM     Status:  MEDLINE    
By means of pellet tracking techniques using an X-ray microbeam system, observations of the articulatory movements of various types of dysarthric subjects were conducted. In selected cases, electromyography (EMG) was also performed. The data were specifically examined for range, velocity, and consistency (reproducibility) of the movements of the articulators, as well as the pattern of coordination of the different articulators involved. It was found in the case of ataxic dysarthria of cerebellar origin, for example, that the dynamic patterns were best represented as a difficulty in the initiation of purposeful movements and an inconsistency of articulatory movements, particularly in the repetitive production of a monosyllable. On EMG, breakdown of the rhythmical patterns in the articulatory muscles was quite obvious in the repetition of a monosyllable. In the case of amyotrophic lateral sclerosis (ALS), decrease in the range and velocity of movements was noted. This resulted from reduced neuromuscular units (NMU) activities manifested in clinical EMG. Analysis of the dynamic aspects of the dysarthrias is a promising approach for elucidating the nature of central problems of speech production and for a differential diagnosis of various types of dysarthrias.
H Hirose; S Kiritani; T Ushijima; M Sawashima
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  The Journal of speech and hearing disorders     Volume:  43     ISSN:  0022-4677     ISO Abbreviation:  J Speech Hear Disord     Publication Date:  1978 Feb 
Date Detail:
Created Date:  1978-05-17     Completed Date:  1978-05-17     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0376335     Medline TA:  J Speech Hear Disord     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  96-105     Citation Subset:  IM    
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MeSH Terms
Action Potentials
Amyotrophic Lateral Sclerosis / physiopathology
Ataxia / physiopathology
Cineradiography / methods
Jaw / physiopathology*
Lip / physiopathology*
Middle Aged
Muscles / physiopathology
Speech Disorders / physiopathology*

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