Effects of Age on Concurrent Vowel Perception in Acoustic and Simulated Electroacoustic Hearing

Autor/inn/en	Arehart, Kathryn H.; Souza, Pamela E.; Muralimanohar, Ramesh Kumar; Miller, Christi Wise
Titel	Effects of Age on Concurrent Vowel Perception in Acoustic and Simulated Electroacoustic Hearing
Quelle	In: Journal of Speech, Language, and Hearing Research, 54 (2011) 1, S.190-210 (21 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2010/09-0145)
Schlagwörter	Vowels; Assistive Technology; Auditory Perception; Simulation; Hearing (Physiology); Age Differences; Acoustics + Suchen Sie Ihr Suchwort? Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Simulation program; Simulationsprogramm; Gehör; Hören; Age; Difference; Age difference; Altersunterschied
Abstract	Purpose: In this study, the authors investigated the effects of age on the use of fundamental frequency differences([delta]F[subscript 0]) in the perception of competing synthesized vowels in simulations of electroacoustic and cochlear-implant hearing. Method: Twelve younger listeners with normal hearing and 13 older listeners with (near) normal hearing were evaluated in their use of [delta]F[subscript 0] in the perception of competing synthesized vowels for 3 conditions: unprocessed synthesized vowels (UNP), envelope-vocoded synthesized vowels that simulated a cochlear implant (VOC), and synthesized vowels processed to simulate electroacoustic stimulation (EAS) hearing. Tasks included (a) "multiplicity," which required listeners to identify whether a stimulus contained 1 or 2 sounds and (b) "double-vowel identification," which required listeners to attach phonemic labels to the competing synthesized vowels. Results: Multiplicity perception was facilitated by [delta]F[subscript 0] in UNP and EAS but not in VOC, with no age-related deficits evident. Double-vowel identification was facilitated by [delta]F[subscript 0], with [delta]F[subscript 0] benefit largest in UNP, reduced in EAS, and absent in VOC. Age adversely affected overall identification and [delta]F[subscript 0] benefit on the double-vowel task. Conclusions: Some but not all older listeners derived [delta]F[subscript 0] benefit in EAS hearing. This variability may partly be due to how listeners are able to draw on higher-level processing resources in extracting and integrating cues in EAS hearing. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10