Document Detail

Acoustic characteristics of simulated respiratory-induced vocal tremor.
MedLine Citation:
PMID:  23184136     Owner:  NLM     Status:  Publisher    
PURPOSE: The purpose of this study was to investigate the relation of forced respiratory oscillation to the acoustic characteristics of vocal tremor. METHOD: Acoustic analyses were performed to determine the characteristics of the intensity and fundamental frequency (F0) for speech samples obtained by Farinella et al. (2006) using a respiratory forced oscillation paradigm with five healthy adult males to simulate vocal tremor involving respiratory pressure modulation. The analyzed conditions were sustained productions of /a/ with amplitudes of applied pressure of 0, 1, 2, and 4 cm H(2)O and a rate of 5 Hz. RESULTS: Forced respiratory oscillation produced modulation of the intensity and F0 for all participants. Variability was observed between participants and conditions in the change in intensity and F0 per unit of pressure change, as well as in the mean intensity and F0. However, the extent of modulation of intensity and F0 generally increased as the applied pressure increased, as would be expected. CONCLUSIONS: These findings suggest that individuals develop idiosyncratic adaptations to pressure modulations, which are important to understanding aspects of variability in vocal tremor and the need for assessment of all components of the speech mechanism that may be directly or indirectly affected by tremor.
Rosemary A Lester; Brad H Story
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-26
Journal Detail:
Title:  American journal of speech-language pathology / American Speech-Language-Hearing Association     Volume:  -     ISSN:  1558-9110     ISO Abbreviation:  Am J Speech Lang Pathol     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9114726     Medline TA:  Am J Speech Lang Pathol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Speech Acoustics Laboratory, Department of Speech, Language, and Hearing Sciences, University of Arizona, Tucson, AZ.
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