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.
|Abbas, Paul J; Brown, Carolyn J (2015) Assessment of responses to cochlear implant stimulation at different levels of the auditory pathway. Hear Res 322:67-76|
|Driscoll, Virginia; Gfeller, Kate; Tan, Xueli et al. (2015) Family involvement in music impacts participation of children with cochlear implants in music education and music activities. Cochlear Implants Int 16:137-46|
|Kopelovich, Jonathan C; Reiss, Lina A J; Oleson, Jacob J et al. (2014) Risk factors for loss of ipsilateral residual hearing after hybrid cochlear implantation. Otol Neurotol 35:1403-8|
|Oleson, Jacob J; Cavanaugh, Joseph E; Tomblin, J Bruce et al. (2014) Combining growth curves when a longitudinal study switches measurement tools. Stat Methods Med Res :|
|Tokita, Joshua; Dunn, Camille; Hansen, Marlan R (2014) Cochlear implantation and single-sided deafness. Curr Opin Otolaryngol Head Neck Surg 22:353-8|
|Dunn, Camille C; Walker, Elizabeth A; Oleson, Jacob et al. (2014) Longitudinal speech perception and language performance in pediatric cochlear implant users: the effect of age at implantation. Ear Hear 35:148-60|
|McMurray, Bob; Munson, Cheyenne; Tomblin, J Bruce (2014) Individual differences in language ability are related to variation in word recognition, not speech perception: evidence from eye movements. J Speech Lang Hear Res 57:1344-62|
|Farris-Trimble, Ashley; McMurray, Bob; Cigrand, Nicole et al. (2014) The process of spoken word recognition in the face of signal degradation. J Exp Psychol Hum Percept Perform 40:308-27|
|Perreau, Ann E; Spejcher, Bryn; Ou, Hua et al. (2014) The spatial hearing questionnaire: data from individuals with normal hearing. Am J Audiol 23:173-81|
|Reiss, L A J; Turner, C W; Karsten, S A et al. (2014) Plasticity in human pitch perception induced by tonotopically mismatched electro-acoustic stimulation. Neuroscience 256:43-52|
Showing the most recent 10 out of 138 publications