Regularity Matters: Unpredictable Speech Degradation Inhibits Adaptation to Dysarthric Speech

Autor/inn/en	Lansford, Kaitlin L.; Borrie, Stephanie A.; Barrett, Tyson S.
Titel	Regularity Matters: Unpredictable Speech Degradation Inhibits Adaptation to Dysarthric Speech
Quelle	In: Journal of Speech, Language, and Hearing Research, 62 (2019) 12, S.4282-4290 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Articulation Impairments; Neurological Impairments; Pronunciation; Listening Comprehension; Training; Instructional Effectiveness + Suchen Sie Ihr Suchwort? Artikulationsstörung; Neurodegenerative Erkrankung; Aussprache; Hörverständnis; Ausbildung; Unterrichtserfolg
Abstract	Purpose: Listener-targeted perceptual training paradigms, which leverage the mechanism of perceptual learning, show strong promise for improving intelligibility in dysarthria, offsetting the communicative burden from the speaker onto the listener. Theoretical models of perceptual learning underscore the importance of acoustic regularity (i.e., signal predictability) for listener adaptation to degraded speech. The purpose of the current investigation was to evaluate intelligibility outcomes following perceptual training with hyperkinetic dysarthria, a subtype characterized by reduced signal predictability. Method: Forty listeners completed the standard 3-phase perceptual training protocol (pretest, training, and posttest) with 1 of 2 talkers with hyperkinetic dysarthria. Perceptual data were compared to a historical data set for 1 other talker with hyperkinetic dysarthria to examine the effect of perceptual training on intelligibility. Results: When controlling for pretest intelligibility, regression results suggest listeners of the 2 novel talkers with hyperkinetic dysarthria performed comparably to the listeners of the original talker on the posttest following training. Furthermore, differences between pretest and posttest intelligibility failed to reach clinical significance for all 3 talkers and statistical significance for 2 of the 3. Conclusion: The current findings are consistent with theoretical models of perceptual learning and suggest that listener adaptation to degraded speech may be negligible for talkers with dysarthria whose speech is marked by reduced signal predictability. (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