Detection of Articulatory Deficits in Parkinson's Disease: Can Systematic Manipulations of Phonetic Complexity Help?

Autor/inn/en	Kuruvilla-Dugdale, Mili; Salazar, Mary; Zhang, Anqing; Mefferd, Antje S.
Titel	Detection of Articulatory Deficits in Parkinson's Disease: Can Systematic Manipulations of Phonetic Complexity Help?
Quelle	In: Journal of Speech, Language, and Hearing Research, 63 (2020) 7, S.2084-2098 (15 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Kuruvilla-Dugdale, Mili)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Neurological Impairments; Articulation Impairments; Feasibility Studies; Disability Identification; Older Adults; Difficulty Level; Speech Evaluation; Tennessee (Nashville); Missouri + Suchen Sie Ihr Suchwort? Neurodegenerative Erkrankung; Artikulationsstörung; Älterer Erwachsener; Schwierigkeitsgrad
Abstract	Purpose: This study sought to determine the feasibility of using phonetic complexity manipulations as a way to systematically assess articulatory deficits in talkers with progressive dysarthria due to Parkinson's disease (PD). Method: Articulatory kinematics were recorded using three-dimensional electromagnetic articulography from 15 talkers with PD (58-84 years old) and 15 healthy controls (55-80 years old) while they produced target words embedded in a carrier phrase. Majority of the talkers with PD exhibited a relatively mild dysarthria. For stimuli selection, phonetic complexity was calculated for a variety of words using the framework proposed by Kent (1992), and six words representative of low, medium, and high phonetic complexity were selected as targets. Jaw, posterior tongue, and anterior tongue kinematic measures that were used to test for phonetic complexity effects included movement speed, cumulative path distance, movement range, movement duration, and spatiotemporal variability. Results: Significantly smaller movements and slower movement speeds were evident in talkers with PD, predominantly for words with high phonetic complexity. The effect sizes of between-groups differences were larger for several jaw kinematic measures than those of the tongue. Discussion and Conclusion: Findings suggest that systematic manipulations of phonetic complexity can support the detection of articulatory deficits in talkers with PD. Phonetic complexity should therefore be leveraged for the assessment of articulatory performance in talkers with progressive dysarthria. Future work will be directed toward linking speech kinematic and auditory-perceptual measures to determine the clinical significance of the current findings. (As Provided).
Anmerkungen	American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01