Effects of Short- and Long-Term Changes in Auditory Feedback on Vowel and Sibilant Contrasts

Autor/inn/en	Lane, Harlan; Matthies, Melanie L.; Guenther, Frank H.; Denny, Margaret; Perkell, Joseph S.; Stockmann, Ellen; Tiede, Mark; Vick, Jennell; Zandipour, Majid
Titel	Effects of Short- and Long-Term Changes in Auditory Feedback on Vowel and Sibilant Contrasts
Quelle	In: Journal of Speech, Language, and Hearing Research, 50 (2007) 4, S.913-927 (15 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2007/065)
Schlagwörter	Assistive Technology; Vowels; Phonemes; Speech Skills; Deafness; Differences; Speech Improvement; Acoustics; Articulation Impairments; Adults + Suchen Sie Ihr Suchwort? Fonem; Mündliche Leistung; Sprachfertigkeit; Gehörlosigkeit; Taubstummheit; Unterscheiden; Sprechentwicklung; Akustik; Artikulationsstörung
Abstract	Purpose: To assess the effects of short- and long-term changes in auditory feedback on vowel and sibilant contrasts and to evaluate hypotheses arising from a model of speech motor planning. Method: The perception and production of vowel and sibilant contrasts were measured in 8 postlingually deafened adults prior to activation of their cochlear implant speech processors, 1 month postactivation, and 1 year postactivation. Measures were taken postactivation both with and without auditory feedback. Contrast measures were also made for a group of speakers with reportedly normal hearing speaking with masked and unmasked auditory feedback. Results: Vowel and sibilant contrasts, measured in the absence of auditory feedback after 1 month of prosthesis use, were diminished compared with their values measured before prosthesis. Contrasts measured in the absence of auditory feedback after 1 year's experience with the prosthesis were increased compared with their values after 1 month's experience. In both time samples, contrasts were enhanced when auditory feedback was restored. Conclusion: The provision of prosthetic hearing to postlingually deafened adults impaired their phonemic contrasts at first, as their auditory feedback had novel characteristics. Once auditory feedback became recalibrated with prosthesis use, it could, in turn, revise feedforward commands that control the contrasts in its absence. (Author).
Anmerkungen	American Speech-Language-Hearing Association (ASHA). 10801 Rockville Pike, Rockville, MD 20852. Tel: 800-638-8255; Fax: 301-571-0457; e-mail: subscribe@asha.org; Web site: http://www.asha.org/about/publications/journal-abstracts/jslhr/
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10