Effects of Biofeedback on Control and Generalization of Nasalization in Typical Speakers

Autor/inn/en	Murray, Elizabeth S. Heller; Mendoza, Joseph O.; Gill, Simone V.; Perkell, Joseph S.; Stepp, Cara E.
Titel	Effects of Biofeedback on Control and Generalization of Nasalization in Typical Speakers
Quelle	In: Journal of Speech, Language, and Hearing Research, 59 (2016) 5, S.1025-1034 (10 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/2016_JSLHR-S-15-0286
Schlagwörter	Biofeedback; Vowels; Intonation; Distinctive Features (Language); Phonemes; Acoustics; Measurement Techniques; Regression (Statistics); Predictor Variables; Scores; Articulation (Speech) + Suchen Sie Ihr Suchwort? Fonem; Akustik; Messtechnik; Regression; Regressionsanalyse; Prädiktor
Abstract	Purpose: The purpose of this study was to determine the effects of biofeedback on control of nasalization in individuals with typical speech. Method: Forty-eight individuals with typical speech attempted to increase and decrease vowel nasalization. During training, stimuli consisted of consonant-vowel-consonant (CVC) tokens with the center vowels /a/ or /i/ in either a nasal or nonnasal phonemic context (e.g., /mim/ vs. /bib/), depending on the participant's training group. Half of the participants had access to augmentative visual feedback during training, which was based on a less-invasive acoustic, accelerometric measure of vowel nasalization--the Horii oral-nasal coupling (HONC) score. During pre- and posttraining assessments, acoustically based nasalance was also measured from the center vowels /a/, /i/, /ae/, and /u/ of CVCs in both nasal and nonnasal contexts. Results: Linear regressions indicated that both phonemic contexts (nasal or nonnasal) and the presence of augmentative visual feedback during training were significant predictors for changes in nasalance scores from pre- to posttraining. Conclusions: Participants were able to change the nasalization of their speech following a training period with HONC biofeedback. Future work is necessary to examine the effect of such training in individuals with velopharyngeal dysfunction. (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	2020/1/01