Document Detail

Vocal Acoustic Characteristics of Patients with Parkinson's Disease.
MedLine Citation:
PMID:  21212679     Owner:  NLM     Status:  Publisher    
Speech samples obtained from 39 idiopathic Parkinson's disease (PD) patients with vocal pathologies were compared with those from 62 age-matched vocally normal non-PD controls. Voice samples collected from sustained vowel phonation and passage reading were acoustically analyzed using Computer Speech Lab and Multi-Dimensional Voice Program software. Noise-to-harmonic ratio, voice turbulence index (VTI) and soft phonation index (SPI) were incorporated as noise-related measurements, fundamental frequency-tremor intensity index (FTRI), amplitude tremor intensity, fundamental frequency-tremor frequency (Fftr), and amplitude-tremor frequency as tremor-related measurements. Compared with controls, the following results were noted: (1) male and female PD patients exhibited significant differences in acoustic parameters of all frequency and amplitude perturbation measurements and noise-related measurements (except VTI in males); (2) speaking fundamental frequency was significantly higher only in male PD patients; (3) FTRI and Fftr in male (only FTRI in female) PD patients were significantly higher, and (4) disease severity and MDVP analysis showed significant correlations between SPI and the Unified Parkinson's Disease Rating Scale Part I (mentation, behavior, mood) and Part II (activities of daily living) in male PD patients; however, this was not the case in female PD patients.
Yasuhiro Tanaka; Masaki Nishio; Seiji Niimi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-1-07
Journal Detail:
Title:  Folia phoniatrica et logopaedica : official organ of the International Association of Logopedics and Phoniatrics (IALP)     Volume:  63     ISSN:  1421-9972     ISO Abbreviation:  -     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-1-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422792     Medline TA:  Folia Phoniatr Logop     Country:  -    
Other Details:
Languages:  ENG     Pagination:  223-230     Citation Subset:  -    
Copyright Information:
Copyright © 2011 S. Karger AG, Basel.
Graduate School of Health and Welfare, Niigata University of Health and Welfare, Niigata, Japan.
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