This project proposes studies measuring the electrically evoked auditory brainstem response (EABR) and the electrically evoked whole nerve action potential (EAP). We propose to make measurements of the threshold and growth of response with stimulus level, but will also emphasize temporal response measures such as recovery from refractory state. Our previous work has demonstrated that these measures are sensitive to degenerative changes in the auditory system and may also be related to perception of speech through the implant. We propose here to use these and other electrophysiological and psychophysical measures to address issues regarding fitting strategies in cochlear implant users. We hypothesize that the information that we gain through electrophysiological and psychophysical testing of individual cochlear implant users will allow us to choose more appropriate speech processing algorithms thereby maximizing performance with the device. We will evaluate several ways in which the programming of the speech processor may be adjusted to increase performance on speech perception tasks in conjunction with Project #1 - Audiology and Speech Processing. We will also evaluate the extent to which physiological tests may serve as a basis for choosing particular speech stimuli to use in auditory training asks in conjunction with Project #5 - Speech and Language and to choose particular stimuli for use in music training tasks in conjunction with Project 3 - Music Perception.

Project Start
2001-01-01
Project End
2001-06-30
Budget Start
Budget End
Support Year
15
Fiscal Year
2001
Total Cost
$262,517
Indirect Cost
Name
University of Iowa
Department
Type
DUNS #
041294109
City
Iowa City
State
IA
Country
United States
Zip Code
52242
Shearer, A Eliot; Tejani, Viral D; Brown, Carolyn J et al. (2018) In Vivo Electrocochleography in Hybrid Cochlear Implant Users Implicates TMPRSS3 in Spiral Ganglion Function. Sci Rep 8:14165
Adunka, Oliver F; Gantz, Bruce J; Dunn, Camille et al. (2018) Minimum Reporting Standards for Adult Cochlear Implantation. Otolaryngol Head Neck Surg 159:215-219
Smith, Nicholas A; McMurray, Bob (2018) Temporal Responsiveness in Mother-Child Dialogue: A Longitudinal Analysis of Children with Normal Hearing and Hearing Loss. Infancy 23:410-431
Wu, Yu-Hsiang; Stangl, Elizabeth; Chipara, Octav et al. (2018) Characteristics of Real-World Signal to Noise Ratios and Speech Listening Situations of Older Adults With Mild to Moderate Hearing Loss. Ear Hear 39:293-304
Gantz, Bruce J; Dunn, Camille C; Oleson, Jacob et al. (2018) Acoustic plus electric speech processing: Long-term results. Laryngoscope 128:473-481
Kim, Jeong-Seo; Tejani, Viral D; Abbas, Paul J et al. (2018) Postoperative Electrocochleography from Hybrid Cochlear Implant users: An Alternative Analysis Procedure. Hear Res 370:304-315
Goman, Adele M; Dunn, Camille C; Gantz, Bruce J et al. (2018) PREVALENCE OF POTENTIAL HYBRID AND CONVENTIONAL COCHLEAR IMPLANT CANDIDATES BASED ON AUDIOMETRIC PROFILE. Otol Neurotol 39:515-517
Bonnard, Damien; Schwalje, Adam; Gantz, Bruce et al. (2018) Electric and acoustic harmonic integration predicts speech-in-noise performance in hybrid cochlear implant users. Hear Res 367:223-230
Pimperton, Hannah; Walker, Elizabeth A (2018) Word Learning in Children With Cochlear Implants: Examining Performance Relative to Hearing Peers and Relations With Age at Implantation. Ear Hear 39:980-991
McMurray, Bob; Ellis, Tyler P; Apfelbaum, Keith S (2018) How Do You Deal With Uncertainty? Cochlear Implant Users Differ in the Dynamics of Lexical Processing of Noncanonical Inputs. Ear Hear :

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