Imprecise vowel articulation as a potential early marker of Parkinson's disease: effect of speaking task
Language English Country United States Media print
Document type Comparative Study, Journal Article, Research Support, Non-U.S. Gov't
PubMed
23967947
DOI
10.1121/1.4816541
Knihovny.cz E-resources
- MeSH
- Speech Acoustics * MeSH
- Acoustics MeSH
- Early Diagnosis MeSH
- Time Factors MeSH
- Adult MeSH
- Phonation * MeSH
- Phonetics * MeSH
- Voice Quality * MeSH
- Middle Aged MeSH
- Humans MeSH
- Speech Production Measurement MeSH
- Parkinson Disease complications diagnosis physiopathology MeSH
- Speech Perception MeSH
- Articulation Disorders diagnosis etiology physiopathology MeSH
- Predictive Value of Tests MeSH
- Aged, 80 and over MeSH
- Aged MeSH
- Speech Intelligibility * MeSH
- Case-Control Studies MeSH
- Sound Spectrography MeSH
- Check Tag
- Adult MeSH
- Middle Aged MeSH
- Humans MeSH
- Male MeSH
- Aged, 80 and over MeSH
- Aged MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
The purpose of this study was to analyze vowel articulation across various speaking tasks in a group of 20 early Parkinson's disease (PD) individuals prior to pharmacotherapy. Vowels were extracted from sustained phonation, sentence repetition, reading passage, and monologue. Acoustic analysis was based upon measures of the first (F1) and second (F2) formant of the vowels /a/, /i/, and /u/, vowel space area (VSA), F2i/F2u and vowel articulation index (VAI). Parkinsonian speakers manifested abnormalities in vowel articulation across F2u, VSA, F2i/F2u, and VAI in all speaking tasks except sustained phonation, compared to 15 age-matched healthy control participants. Findings suggest that sustained phonation is an inappropriate task to investigate vowel articulation in early PD. In contrast, monologue was the most sensitive in differentiating between controls and PD patients, with classification accuracy up to 80%. Measurements of vowel articulation were able to capture even minor abnormalities in speech of PD patients with no perceptible dysarthria. In conclusion, impaired vowel articulation may be considered as a possible early marker of PD. A certain type of speaking task can exert significant influence on vowel articulation. Specifically, complex tasks such as monologue are more likely to elicit articulatory deficits in parkinsonian speech, compared to other speaking tasks.
References provided by Crossref.org
Comparative analysis of speech impairment and upper limb motor dysfunction in Parkinson's disease
Effect of dopaminergic medication on speech dysfluency in Parkinson's disease: a longitudinal study
