Do Adults with Cochlear Implants Rely on Different Acoustic Cues for Phoneme Perception than Adults with Normal Hearing?

Autor/inn/en	Moberly, Aaron C.; Lowenstein, Joanna H.; Tarr, Eric; Caldwell-Tarr, Amanda; Welling, D. Bradley; Shahin, Antoine J.; Nittrouer, Susan
Titel	Do Adults with Cochlear Implants Rely on Different Acoustic Cues for Phoneme Perception than Adults with Normal Hearing?
Quelle	In: Journal of Speech, Language, and Hearing Research, 57 (2014) 2, S.566-582 (16 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/2014_JSLHR-H-12-0323
Schlagwörter	Deafness; Adults; Assistive Technology; Surgery; Acoustics; Cues; Auditory Stimuli; Phonemes; Comparative Analysis; Listening; Age Differences; Hearing Impairments; Speech Communication; Auditory Perception + Suchen Sie Ihr Suchwort? Gehörlosigkeit; Taubstummheit; Chirurgie; Akustik; Stichwort; Auditive Stimulation; Fonem; Hörvorgang; Zuhören; Age; Difference; Age difference; Altersunterschied; Hearing impairment; Hörbehinderung; Auditive Wahrnehmung; Akustische Wahrnehmung
Abstract	Purpose: Several acoustic cues specify any single phonemic contrast. Nonetheless, adult, native speakers of a language share weighting strategies, showing preferential attention to some properties over others. Cochlear implant (CI) signal processing disrupts the salience of some cues: In general, amplitude structure remains readily available, but spectral structure less so. This study asked how well speech recognition is supported if CI users shift attention to salient cues not weighted strongly by native speakers. Method: Twenty adults with CIs participated. The /b?/-/w?/ contrast was used because spectral and amplitude structure varies in correlated fashion for this contrast. Adults with normal hearing weight the spectral cue strongly but the amplitude cue negligibly. Three measurements were made: labeling decisions, spectral and amplitude discrimination, and word recognition. Results: Outcomes varied across listeners: Some weighted the spectral cue strongly, some weighted the amplitude cue, and some weighted neither. Spectral discrimination predicted spectral weighting. Spectral weighting explained the most variance in word recognition. Age of onset of hearing loss predicted spectral weighting but not unique variance in word recognition. Conclusion: The weighting strategies of listeners with normal hearing likely support speech recognition best, so efforts in implant design, fitting, and training should focus on developing those strategies. (As Provided).
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://jslhr.asha.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10