This proposal uses a translational approach to improve the analysis of hearing with novel cochlear implant (CI) sound processing strategies. Psychophysical methods are used to evaluate auditory processing capabilities with a variety of sound processing approaches. Hearing abilities are analyzed with three basic psychophysical tests that measure abilities important for clinical success: spectral-ripple discrimination, temporal modulation detection and Schroeder-phase discrimination.
Two aims are proposed: 1) Demonstrate that the psychophysical tests are useful tools from improving the evaluation of hearing with cochlear implants and 2) Evaluate and help guide the design of cochlear implant sound processing with the results. The results of these studies are expected to advance our understanding of auditory processing capabilities with cochlear implants and expedite the process of evaluating novel strategies. Furthermore, the methods could be employed to evaluate any future treatment for severe hearing loss including hybrid implants and genetic treatments.

Public Health Relevance

A cochlear implant is a surgically implanted device that provides hearing for the deaf and profoundly hearing impaired. The primary purpose of this project is to develop better tools for testing hearing with a cochlear implant. The results will provide new knowledge about hearing with a variety of cochlear implant processing strategies which will help accelerate the development of technologies designed for improving hearing for the deaf and profoundly hearing impaired.

National Institute of Health (NIH)
National Institute on Deafness and Other Communication Disorders (NIDCD)
Research Project (R01)
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Application #
Study Section
Auditory System Study Section (AUD)
Program Officer
Donahue, Amy
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University of Washington
Schools of Medicine
United States
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Shim, Hyun Joon; Won, Jong Ho; Moon, Il Joon et al. (2014) Can unaided non-linguistic measures predict cochlear implant candidacy? Otol Neurotol 35:1345-53
Drennan, Ward R; Anderson, Elizabeth S; Won, Jong Ho et al. (2014) Validation of a clinical assessment of spectral-ripple resolution for cochlear implant users. Ear Hear 35:e92-8
Li, Xing; Nie, Kaibao; Imennov, Nikita S et al. (2013) Improved perception of music with a harmonic based algorithm for cochlear implants. IEEE Trans Neural Syst Rehabil Eng 21:684-94
Golub, Justin S; Won, Jong Ho; Drennan, Ward R et al. (2012) Spectral and temporal measures in hybrid cochlear implant users: on the mechanism of electroacoustic hearing benefits. Otol Neurotol 33:147-53
Won, Jong Ho; Drennan, Ward R; Nie, Kaibao et al. (2011) Acoustic temporal modulation detection and speech perception in cochlear implant listeners. J Acoust Soc Am 130:376-88
Won, Jong Ho; Clinard, Christopher G; Kwon, Seeyoun et al. (2011) Relationship between behavioral and physiological spectral-ripple discrimination. J Assoc Res Otolaryngol 12:375-93
Won, Jong Ho; Jones, Gary L; Drennan, Ward R et al. (2011) Evidence of across-channel processing for spectral-ripple discrimination in cochlear implant listeners. J Acoust Soc Am 130:2088-97