Project 3: The majority of studies examining speech perception in cochlear implant recipients have emphasized performance outcomes, that is, how well linguistic messages are understood. These studies have demonstrated large individual differences in speech and language outcomes following cochlear implantation. The reasons for this variability are not well understood, in part because we know little about how cochlear implant recipients use information in the speech signal to arrive at the intended message. The primary goal of the proposed work is to examine the central perceptual and cognitive processes used during spoken language comprehension that may contribute to variation in performance. Using empirical techniques from basic science, the proposed work will examine mechanisms of lexical processing and perceptual learning in a variety of cochlear implant users, including a group of cochlear implant participants implanted with novel hearing-preservation electrodes. The proposed research further will examine whether differences in these perceptual processing mechanisms are associated with individual variations in cochlear implant outcomes. Across the sample, this work will examine how the nature of the auditory input (electric vs. acoustic plus electric) influences lexical access, perceptual normalization, and perceptual learning in adults and children with cochlear implants. In cooperation with Projects 1 (A+E), 2 (Speech/Language Outcomes), 4 (Electrophysiology) and 5 (Music), the relationship between performance on these process-based measures and performance on other auditory and cognitive tasks will be analyzed. The results should simultaneously extend basic psycholinguistic theory and inform the development of cochlear implant processing strategies, candidate selection and novel therapeutic interventions for cochlear implant users.
This work should provide a better understanding of how adults and children with cochlear implants make use of information in the speech signal to comprehend spoken language. The results may inform the development of new cochlear implant speech processing strategies, cochlear implant candidacy criteria, and aural (re)habilitation programs for adults and children.
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|Rhone, Ariane E; Nourski, Kirill V; Oya, Hiroyuki et al. (2016) Can you hear me yet? An intracranial investigation of speech and non-speech audiovisual interactions in human cortex. Lang Cogn Neurosci 31:284-302|
|Shibata, Seiji B; Ranum, Paul T; Moteki, Hideaki et al. (2016) RNA Interference Prevents Autosomal-Dominant Hearing Loss. Am J Hum Genet 98:1101-13|
|Gantz, Bruce J; Dunn, Camille; Oleson, Jacob et al. (2016) Multicenter clinical trial of the Nucleus Hybrid S8 cochlear implant: Final outcomes. Laryngoscope 126:962-73|
|Gantz, Bruce J; Dunn, Camille; Walker, Elizabeth et al. (2016) Outcomes of Adolescents With a Short Electrode Cochlear Implant With Preserved Residual Hearing. Otol Neurotol 37:e118-25|
|McMurray, Bob; Jongman, Allard (2016) What Comes After /f/? Prediction in Speech Derives From Data-Explanatory Processes. Psychol Sci 27:43-52|
|Gfeller, K (2016) Music-based training for pediatric CI recipients: A systematic analysis of published studies. Eur Ann Otorhinolaryngol Head Neck Dis 133 Suppl 1:S50-6|
|Roland Jr, J Thomas; Gantz, Bruce J; Waltzman, Susan B et al. (2016) United States multicenter clinical trial of the cochlear nucleus hybrid implant system. Laryngoscope 126:175-81|
|Roembke, Tanja; McMurray, Bob (2016) Observational Word Learning: Beyond Propose-But-Verify and Associative Bean Counting. J Mem Lang 87:105-127|
|Kashio, Akinori; Tejani, Viral D; Scheperle, Rachel A et al. (2016) Exploring the Source of Neural Responses of Different Latencies Obtained from Different Recording Electrodes in Cochlear Implant Users. Audiol Neurootol 21:141-9|
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