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.
|McMurray, Bob; Farris-Trimble, Ashley; Rigler, Hannah (2017) Waiting for lexical access: Cochlear implants or severely degraded input lead listeners to process speech less incrementally. Cognition 169:147-164|
|Tejani, Viral D; Abbas, Paul J; Brown, Carolyn J (2017) Relationship Between Peripheral and Psychophysical Measures of Amplitude Modulation Detection in Cochlear Implant Users. Ear Hear 38:e268-e284|
|Guo, Ling-Yu; Spencer, Linda J (2017) Development of Grammatical Accuracy in English-Speaking Children With Cochlear Implants: A Longitudinal Study. J Speech Lang Hear Res 60:1062-1075|
|Abbas, Paul J; Tejani, Viral D; Scheperle, Rachel A et al. (2017) Using Neural Response Telemetry to Monitor Physiological Responses to Acoustic Stimulation in Hybrid Cochlear Implant Users. Ear Hear 38:409-425|
|Shearer, A Eliot; Eppsteiner, Robert W; Frees, Kathy et al. (2017) Genetic variants in the peripheral auditory system significantly affect adult cochlear implant performance. Hear Res 348:138-142|
|Sjoberg, Kristin M; Driscoll, Virginia D; Gfeller, Kate et al. (2017) The impact of electric hearing on children's timbre and pitch perception and talker discrimination. Cochlear Implants Int 18:36-48|
|Samuelson, Larissa K; McMurray, Bob (2017) What does it take to learn a word? Wiley Interdiscip Rev Cogn Sci 8:|
|Oleson, Jacob J; Cavanaugh, Joseph E; McMurray, Bob et al. (2017) Detecting time-specific differences between temporal nonlinear curves: Analyzing data from the visual world paradigm. Stat Methods Med Res 26:2708-2725|
|Scheperle, Rachel A; Tejani, Viral D; Omtvedt, Julia K et al. (2017) Delayed changes in auditory status in cochlear implant users with preserved acoustic hearing. Hear Res 350:45-57|
|Brown, Carolyn J; Jeon, Eun-Kyung; Driscoll, Virginia et al. (2017) Effects of Long-Term Musical Training on Cortical Auditory Evoked Potentials. Ear Hear 38:e74-e84|
Showing the most recent 10 out of 227 publications