18th ANNUAL EARLY HEARING DETECTION & INTERVENTION MEETING
March 3-5, 2019 • Chicago, IL
The Effects of Noise on Electrophysiological Measures of Vowel Perception Among Individuals with Cochlear Implants
There is a need for more objective audiological measures for persons with hearing loss who undergo various amplification options. In particular, populations such as infants who are candidates for cochlear implantation currently benefit from pre-implant objective testing such as auditory brainstem response testing. These results are used to inform the implantation process. Post-implantation programming is traditionally guided by behavioral responses such as visual reinforcement audiometry (VRA) in a sound-treated booth to speech and/or warble tonal stimuli. While such testing is useful, more objective data based on complex, real-life sounds such as speech in noise is needed. The present study will look at the differential effects of noise on vowel contrasts in 6-11 year old children. Using both behavioral and objective outcome measures, such as behavioral speech in noise testing and electrophysiological testing, respectively. The mismatch negativity (MMN) response is one way to peer into the speech discrimination systems of pediatric cochlear implantees. Recent research has championed the efforts to derive fitting procedures from speech perception performance data ( Madell, 2011). The current study aims to optimize processes such as cochlear implant programming by assessing objectively vowel discrimination ability in quiet and in different levels of noise via the MMN response. The MMN is a viable choice in this and similar populations since the MMN can measure acoustic discrimination ability of differing auditory stimuli (such as vowel contrasts) without the need of attention from the participant. Such results could inform the programming/fitting process and reveal optimal fitting strategies based on objective, real-life speech in noise data.
- Speech discrimination among vowel contrasts may inform cochlear implant programming decisions
- Mismatch negativity response is a viable clinical test but with limitations
- Cochlear implants have limitations based on various factors such as speech signal fidelity and trade offs between electrode channels and stimulation rates
Poster:
18878_10557JeffreyCooper.pdf
Presenter: Jeffrey Cooper
RESEARCH WORK: Research Assistant in Development Neurolinguistic and Cognition Lab (present); Research Assistant in Cochlear Implant Lab (August 2016-May 2017, Gallaudet University); T-35 research training program funded by NIDCD (June-August 2012, Washington University St Louis, MO) RESEARCH PRESENTED: Kwon, B.K., Holden, L., Lopez, B., Cooper, J.D., Holden, T., Firszt, J. (2017 July). Self-exploration of maps by cochlear implant users. Poster presented by colleagues at the annual Conference on Implantable Auditory Prostheses, Lake Tahoe, CA; Cooper, J.D., Ohlemiller, K.K.(2013, March). Effects of exposure to unilateral versus bilateral noise in CBA/J mice. Poster presented at the Annual Convention of the American Auditory Society, Scottsdale, AZ EDUCATION: Clinical Doctorate of Audiology-- A.T. Still University '13; B.S. --Arizona State University '09
ASHA DISCLOSURE:
Financial -
No relevant financial relationship exist.
Nonfinancial -
No relevant nonfinancial relationship exist.