Acoustic and Perceptual Cues to Contrastive Stress in Dysarthria

Autor/inn/en	Patel, Rupal; Campellone, Pamela
Titel	Acoustic and Perceptual Cues to Contrastive Stress in Dysarthria
Quelle	In: Journal of Speech, Language, and Hearing Research, 52 (2009) 1, S.206-222 (17 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2008/07-0078)
Schlagwörter	Acoustics; Articulation Impairments; Perception; Adults; Auditory Perception; Listening; Cues; Suprasegmentals; Sentences + Suchen Sie Ihr Suchwort? Akustik; Artikulationsstörung; Wahrnehmung; Auditive Wahrnehmung; Akustische Wahrnehmung; Hörvorgang; Zuhören; Stichwort; Sentence analysis; Satzanalyse
Abstract	Purpose: In this study, the authors sought to understand acoustic and perceptual cues to contrastive stress in speakers with dysarthria (DYS) and healthy controls (HC). Method: The production experiment examined the ability of 12 DYS (9 male, 3 female; M = 39 years of age) and 12 age- and gender-matched HC (9 male, 3 female; M = 37.5 years of age) to signal contrastive stress within short sentences. Acoustic changes in fundamental frequency (F0), intensity, and duration were studied. The perceptual experiment explored whether 48 unfamiliar listeners (24 male, 24 female; M = 23.4 years of age) could identify the intended stress location in DYS and HC productions. Results: Although both speaker groups used all 3 prosodic cues, DYS relied more heavily on duration. Despite reduced F0 and intensity variation within DYS utterances, listeners were highly accurate at identifying both DYS (greater than 93%) and HC (greater than 97%) productions. Acoustic predictors of listener accuracy included heightened prosodic cues on stressed words along with marked decreases in these variables for neighboring nonstressed words. Conclusions: Speakers signaled contrastive stress using relative changes in one or more prosodic cue. Although individual speakers employed different cue combinations, listeners were highly adept at discerning the intended stress location. The communicative potential of prosody in speakers with congenital dysarthria is discussed. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10