TY - JOUR
T1 - Interactions of speaking condition and auditory feedback on vowel production in postlingually deaf adults with cochlear implants
AU - Ménard, Lucie
AU - Polak, Marek
AU - Denny, Margaret
AU - Burton, Ellen
AU - Lane, Harlan
AU - Matthies, Melanie L.
AU - Marrone, Nicole
AU - Perkell, Joseph S.
AU - Tiede, Mark
AU - Vick, Jennell
N1 - Funding Information:
This research was supported by Grant No. R01-DC003007 from the National Institute on Deafness and Other Communication Disorders, National Institutes of Health. We are grateful to Dr. Robert Balkany of the Department of Otolaryngology, University of Miami Medical School, for providing the facilities and subject referrals for this study. We are grateful to Frank Guenther for fruitful discussions about the DIVA model. 1
PY - 2007
Y1 - 2007
N2 - This study investigates the effects of speaking condition and auditory feedback on vowel production by postlingually deafened adults. Thirteen cochlear implant users produced repetitions of nine American English vowels prior to implantation, and at one month and one year after implantation. There were three speaking conditions (clear, normal, and fast), and two feedback conditions after implantation (implant processor turned on and off). Ten normal-hearing controls were also recorded once. Vowel contrasts in the formant space (expressed in mels) were larger in the clear than in the fast condition, both for controls and for implant users at all three time samples. Implant users also produced differences in duration between clear and fast conditions that were in the range of those obtained from the controls. In agreement with prior work, the implant users had contrast values lower than did the controls. The implant users' contrasts were larger with hearing on than off and improved from one month to one year postimplant. Because the controls and implant users responded similarly to a change in speaking condition, it is inferred that auditory feedback, although demonstrably important for maintaining normative values of vowel contrasts, is not needed to maintain the distinctiveness of those contrasts in different speaking conditions.
AB - This study investigates the effects of speaking condition and auditory feedback on vowel production by postlingually deafened adults. Thirteen cochlear implant users produced repetitions of nine American English vowels prior to implantation, and at one month and one year after implantation. There were three speaking conditions (clear, normal, and fast), and two feedback conditions after implantation (implant processor turned on and off). Ten normal-hearing controls were also recorded once. Vowel contrasts in the formant space (expressed in mels) were larger in the clear than in the fast condition, both for controls and for implant users at all three time samples. Implant users also produced differences in duration between clear and fast conditions that were in the range of those obtained from the controls. In agreement with prior work, the implant users had contrast values lower than did the controls. The implant users' contrasts were larger with hearing on than off and improved from one month to one year postimplant. Because the controls and implant users responded similarly to a change in speaking condition, it is inferred that auditory feedback, although demonstrably important for maintaining normative values of vowel contrasts, is not needed to maintain the distinctiveness of those contrasts in different speaking conditions.
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U2 - 10.1121/1.2710963
DO - 10.1121/1.2710963
M3 - Article
C2 - 17552727
AN - SCOPUS:34249910057
SN - 0001-4966
VL - 121
SP - 3790
EP - 3801
JO - Journal of the Acoustical Society of America
JF - Journal of the Acoustical Society of America
IS - 6
ER -