Document Detail

Effects of simulated source of tremor on acoustic and airflow voice measures.
MedLine Citation:
PMID:  10764116     Owner:  NLM     Status:  MEDLINE    
To test the effects of different sources of tremor on the voice, tremor was simulated by external rhythmic perturbation of structures at the subglottal, glottal, and supraglottal levels in 10 healthy subjects. The acoustic and airflow signals simultaneously recorded during sustained phonation in the normal and the 3 simulated tremor conditions were analyzed and compared. Voice measures included: fundamental frequency, 2 short-term perturbation measures (jitter and shimmer), and 3 long-term tremor measures (prominence ratios of the spectral peaks of the acoustic frequency contour, acoustic amplitude contour, and airflow contour). Measures of fundamental frequency and percent shimmer were not significantly affected by the simulated tremors. Measures of percent jitter and the amplitudes of the long-term frequency and amplitude modulations were most prominently increased when respiratory drive was perturbed by simulated tremor. Spectral analysis of the acoustic amplitude contour was most useful in distinguishing the 3 sites of simulated tremor.
J Jiang; E Lin; J Wu; C Gener; D G Hanson
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of voice : official journal of the Voice Foundation     Volume:  14     ISSN:  0892-1997     ISO Abbreviation:  J Voice     Publication Date:  2000 Mar 
Date Detail:
Created Date:  2000-06-13     Completed Date:  2000-06-13     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8712262     Medline TA:  J Voice     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  47-57     Citation Subset:  IM    
Department of Otolaryngology--Head and Neck Surgery, Northwestern University Medical School, Chicago, Illinois 60611-3008, USA.
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MeSH Terms
Speech Acoustics*
Tremor / physiopathology*
Voice / physiology*
Grant Support

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