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

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Title: Effects of Biofeedback on Control and Generalization of Nasalization in Typical Speakers
Language: English
Authors: Murray, Elizabeth S. Heller, Mendoza, Joseph O., Gill, Simone V., Perkell, Joseph S., Stepp, Cara E.
Source: Journal of Speech, Language, and Hearing Research. Oct 2016 59(5):1025-1034.
Availability: 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
Peer Reviewed: Y
Page Count: 10
Publication Date: 2016
Sponsoring Agency: National Institute on Deafness and Other Communication Disorders (NIDCD)
Contract Number: DC012651
Document Type: Journal Articles
Reports - Research
Descriptors: Biofeedback, Vowels, Intonation, Distinctive Features (Language), Phonemes, Acoustics, Measurement Techniques, Regression (Statistics), Predictor Variables, Scores, Articulation (Speech)
DOI: 10.1044/2016_JSLHR-S-15-0286
ISSN: 1092-4388
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.
Abstractor: As Provided
Entry Date: 2016
Accession Number: EJ1119018
Database: ERIC
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  Data: Effects of Biofeedback on Control and Generalization of Nasalization in Typical Speakers
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  Data: <searchLink fieldCode="SO" term="%22Journal+of+Speech%2C+Language%2C+and+Hearing+Research%22"><i>Journal of Speech, Language, and Hearing Research</i></searchLink>. Oct 2016 59(5):1025-1034.
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  Data: 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
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  Data: 10.1044/2016_JSLHR-S-15-0286
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  Data: 1092-4388
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: 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.
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      – SubjectFull: Articulation (Speech)
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      – TitleFull: Effects of Biofeedback on Control and Generalization of Nasalization in Typical Speakers
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