The long-term objective of the proposed research is to obtain a better understanding of the effectiveness of cochlear implants ad tactile aids in promoting improved development of speech in totally deaf children. Existing data suggest that these devices do promote speech development in the children who use them, but knowledge is still limited with respect to: (1) the range of speech production skills developed, (2) the time course over which improvement occurs, and (3) the highest level of speech production that is possible with current devices. Five longitudinal experiments are proposed that will provide a comprehensive set of data on the acquisition of physiological, phonetic, and phonological skills in three experimental groups of children: single-channel cochlear implant (3M/House device) users, multichannel cochlear implant (Nucleus 22-Channel Cochlear Implant System) users, and multichannel vibrotactile aid (Tactaid 7) users. Experiment I will examine changes in physiological speech production with aerodynamic speech measures. Experiment II is designed to quantify changes in phonetic speech production skills. Acquisition of English phonology will be examined in Experiment III. The relationship between speech perception and production skills is examined in Experiment IV. In Experiment V, selected speech production measures will be obtained with the subjects' devices turned OFF, and compared to the same measures obtained with their devices turned ON. The ON/OFF paradigm will identify those aspects of speech production that require ongoing auditory (or vibrotactile) feedback to be maintained. Speech development within- groups will be examined over time to quantify the rate of learning and extent of speech development that occurs with each type of device. Comparison between-groups will provide data on the relative effectiveness of the different devices in promoting speech development. The influence of age at onset of deafness and other demographic variables on speech development also will be examined. Speech development in the experimental groups will be compared to that in two groups of subjects who use conventional hearing aids. One group will have substantial residual hearing in the profound range of impairment. Their performance will be used to establish the upper limit of speech development hypothesized to be possible with an implant or tactile aid. The other group will have limited residual hearing, especially in the high frequencies. If their performance is poorer than that of the experimental subjects, then this would indicate that cochlear implants or tactile aids are more effective in promoting speech development in children with some residual hearing than are conventional hearing aids.

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Research Project (R01)
Project #
5R01DC000423-08
Application #
2125628
Study Section
Sensory Disorders and Language Study Section (CMS)
Project Start
1987-07-01
Project End
1997-06-30
Budget Start
1994-07-01
Budget End
1995-06-30
Support Year
8
Fiscal Year
1994
Total Cost
Indirect Cost
Name
Indiana University-Purdue University at Indianapolis
Department
Otolaryngology
Type
Schools of Medicine
DUNS #
005436803
City
Indianapolis
State
IN
Country
United States
Zip Code
46202
Chin, Steven B; Kuhns, Matthew J (2014) Proximate factors associated with speech intelligibility in children with cochlear implants: A preliminary study. Clin Linguist Phon 28:532-42
Chin, Steven B; Bergeson, Tonya R; Phan, Jennifer (2012) Speech intelligibility and prosody production in children with cochlear implants. J Commun Disord 45:355-66
Houston, Derek M; Beer, Jessica; Bergeson, Tonya R et al. (2012) The ear is connected to the brain: some new directions in the study of children with cochlear implants at Indiana University. J Am Acad Audiol 23:446-63
Houston, Derek M; Stewart, Jessica; Moberly, Aaron et al. (2012) Word learning in deaf children with cochlear implants: effects of early auditory experience. Dev Sci 15:448-61
Houston, Derek M; Miyamoto, Richard T (2010) Effects of early auditory experience on word learning and speech perception in deaf children with cochlear implants: implications for sensitive periods of language development. Otol Neurotol 31:1248-53
Holt, Rachael Frush; Svirsky, Mario A (2008) An exploratory look at pediatric cochlear implantation: is earliest always best? Ear Hear 29:492-511
Horn, D L; Davis, R A O; Pisoni, D B et al. (2005) Development of visual attention skills in prelingually deaf children who use cochlear implants. Ear Hear 26:389-408
Horn, D L; Davis, R A O; Pisoni, D B et al. (2005) Behavioral inhibition and clinical outcomes in children with cochlear implants. Laryngoscope 115:595-600
Miyamoto, Richard T; Houston, Derek M; Bergeson, Tonya (2005) Cochlear implantation in deaf infants. Laryngoscope 115:1376-80
Svirsky, Mario A; Teoh, Su-Wooi; Neuburger, Heidi (2004) Development of language and speech perception in congenitally, profoundly deaf children as a function of age at cochlear implantation. Audiol Neurootol 9:224-33

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