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)
Project #
Application #
Study Section
Auditory System Study Section (AUD)
Program Officer
Donahue, Amy
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Budget End
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University of Washington
Schools of Medicine
United States
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Drennan, Ward R; Won, Jong Ho; Timme, Alden O et al. (2016) Nonlinguistic Outcome Measures in Adult Cochlear Implant Users Over the First Year of Implantation. Ear Hear 37:354-64
Drennan, Ward R; Oleson, Jacob J; Gfeller, Kate et al. (2015) Clinical evaluation of music perception, appraisal and experience in cochlear implant users. Int J Audiol 54:114-23
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
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
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
Won, Jong Ho; Lorenzi, Christian; Nie, Kaibao et al. (2012) The ability of cochlear implant users to use temporal envelope cues recovered from speech frequency modulation. J Acoust Soc Am 132:1113-9
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; Nie, Kaibao; Drennan, Ward R et al. (2012) Maximizing the spectral and temporal benefits of two clinically used sound processing strategies for cochlear implants. Trends Amplif 16:201-10
Jung, Kyu Hwan; Won, Jong Ho; Drennan, Ward R et al. (2012) Psychoacoustic performance and music and speech perception in prelingually deafened children with cochlear implants. Audiol Neurootol 17:189-97
Li, Xing; Nie, Kaibao; Imennov, Nikita S et al. (2012) Improved perception of speech in noise and Mandarin tones with acoustic simulations of harmonic coding for cochlear implants. J Acoust Soc Am 132:3387-98

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