Acoustic Predictors of Ease of Understanding in Spanish Speakers With Dysarthria Associated With Parkinson's Disease.
| Autor: | Moya-Galé, Gemma, Wisler, Alan A., Walsh, Stephen J., McAuliffe, Megan J., Levy, Erika S. |
|---|---|
| Předmět: |
VOWELS
SPEECH perception COMPUTER software STATISTICS PHYSIOLOGICAL aspects of speech PREDICTIVE tests ANALYSIS of variance MULTIPLE regression analysis MUSICAL pitch SPEECH evaluation VISUAL analog scale TASK performance MANN Whitney U Test REGRESSION analysis RISK assessment SEVERITY of illness index INTER-observer reliability T-test (Statistics) HYPOKINETIC dysarthria PARKINSON'S disease PHONETICS INTRACLASS correlation RESEARCH funding QUESTIONNAIRES PREDICTION models MUSICAL perception DATA analysis software LISTENING READING SPEECH DISEASE complications |
| Zdroj: | Journal of Speech, Language & Hearing Research; 2023 Supplement, Vol. 66, p2999-3012, 14p |
| Abstrakt: | Purpose: The purpose of this study was to examine selected baseline acoustic features of hypokinetic dysarthria in Spanish speakers with Parkinson's disease (PD) and identify potential acoustic predictors of ease of understanding in Spanish. Method: Seventeen Spanish-speaking individuals with mild-to-moderate hypokinetic dysarthria secondary to PD and eight healthy controls were recorded reading a translation of the Rainbow Passage. Acoustic measures of vowel space area, as indicated by the formant centralization ratio (FCR), envelope modulation spectra (EMS), and articulation rate were derived from the speech samples. Additionally, 15 healthy adults rated ease of understanding of the recordings on a visual analogue scale. A multiple linear regression model was implemented to investigate the predictive value of the selected acoustic parameters on ease of understanding. Results: Listeners' ease of understanding was significantly lower for speakers with dysarthria than for healthy controls. The FCR, EMS from the first 10 s of the reading passage, and the difference in EMS between the end and the beginning sections of the passage differed significantly between the two groups of speakers. Findings indicated that 67.7% of the variability in ease of understanding was explained by the predictive model, suggesting a moderately strong relationship between the acoustic and perceptual domains. Conclusions: Measures of envelope modulation spectra were found to be highly significant model predictors of ease of understanding of Spanishspeaking individuals with hypokinetic dysarthria associated with PD. Articulation rate was also found to be important (albeit to a lesser degree) in the predictive model. The formant centralization ratio should be further examined with a larger sample size and more severe dysarthria to determine its efficacy in predicting ease of understanding. [ABSTRACT FROM AUTHOR] |
| Databáze: | Complementary Index |
| Externí odkaz: |
|