Perceptual Learning of Altered Vowel Space Improves Identification of Vowels Produced by Individuals with Dysarthria Secondary to Amyotrophic Lateral Sclerosis

Autor/inn/en	Olmstead, Annie J.; Lee, Jimin; Chen, Janice
Titel	Perceptual Learning of Altered Vowel Space Improves Identification of Vowels Produced by Individuals with Dysarthria Secondary to Amyotrophic Lateral Sclerosis
Quelle	In: Journal of Speech, Language, and Hearing Research, 65 (2022) 6, S.2204-2214 (11 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Olmstead, Annie J.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Vowels; Pronunciation; Neurological Impairments; Articulation Impairments; Program Effectiveness; Training; Listening; Generalization; Interpersonal Communication; Accuracy; Comprehension; Pennsylvania + Suchen Sie Ihr Suchwort? Aussprache; Neurodegenerative Erkrankung; Artikulationsstörung; Ausbildung; Hörvorgang; Zuhören; Interpersonale Kommunikation; Verstehen; Verständnis
Abstract	Purpose: This study examines the efficacy of perceptual training for improving typical listeners' identification of vowels produced by individuals with dysarthria. We examined whether training on a subset of vowels can generalize to (a) untrained vowels and (b) other speakers with similar overall intelligibility. Method: Sixty naive listeners completed a pretest/posttest perceptual learning task. In the pretraining test and posttraining test, participants identified nine American English monophthongs produced by two speakers with dysarthria secondary to amyotrophic lateral sclerosis (ALS). In the 20-min training task, a two-alternative forced choice (2AFC) task with feedback trained listeners on a subset of the vowels and speakers presented in the pretraining test. Results: Vowel identification accuracy improved overall as a function of training. However, patterns of generalization between speakers and vowel types were not symmetric. Specifically, listeners generalized training from front vowels to back vowels but not vice versa. Likewise, listeners generalized from one speaker to another but not in the opposite direction. Examination of confusion matrices for the pretraining and posttraining revealed complex patterns of vowel-specific improvement. Conclusions: This study demonstrates that listeners benefit from a very simple training paradigm targeting vowels. Additionally, error patterns revealed that vowels are both resistant to and responsive to perceptual learning. Implications for future research and clinical training paradigms are discussed. (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