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Seminars in Hearing Research (01/13/22) - Subong Kim

Seminars in Hearing Research (01/13/22) - Subong Kim

Author: M. Heinz
Event Date: January 13, 2022
Hosted By: Hari Bharadwaj
Time: 1030-1120
Location: LYLE 1150
Contact Name: Bharadwaj, Hari M
Contact Email:
Open To: All
Priority: No
School or Program: Biomedical Engineering
College Calendar: Show
Subong Kim (Postdoctoral Associate, Department of Speech, Language, and Hearing Sciences) will present "Precision Diagnostics for Personalized Hearing Intervention and Perceptual Training" at our next Seminars in Hearing Research at Purdue (SHRP) on January 13th at 1030-1120 in LYLE 1150.


Seminars in Hearing Research at Purdue (SHRP)

Thursday, January 13, 2021 
10:30-11:20 AM in LYLE 1150 & Zoom

Title: Precision Diagnostics for Personalized Hearing Intervention and Perceptual Training

Speaker: Subong Kim, Postdoctoral Associate, SLHS

Abstract: In audiology clinics, currently, hearing loss is mainly characterized using threshold audiometry, and hearing intervention is provided to maximize audibility while maintaining comfortable loudness. Yet, even with prescriptive amplification, speech understanding abilities in noisy environments vary substantially across individuals with similar audiograms. Because speech-in-noise perception is considerably more complex than detecting quiet sound, the nature of deficits in suprathreshold hearing likely differ from person to person; however, the physiological bases of such individual variability remain unknown. My research aims to advance our understanding of the precise auditory and cognitive mechanisms leading to impaired hearing, with the intent of improving personalized hearing intervention or providing perceptual training, based on each listener's physiology. In this presentation, first, I will introduce the notion of cortical "neural signal-to-noise ratio" that can predict individual speech-in-noise outcomes from noise-reduction (NR) processing. Then, I will discuss my approach to building profiles of peripheral pathophysiology and top-down selective attention efficacy to obtain a detailed characterization of individual hearing loss across listeners with a similar hearing sensitivity using a range of physiological and psychoacoustical measures. I will also describe novel subcortical measures for quantifying individual tolerance to noise and sensitivity to speech-cue distortions induced by NR processing. Next, I will demonstrate the effect of NR on cortical speech processing across brain regions beyond the auditory cortex. Further, I will discuss how the neurofeedback training of auditory selective attention can enhance the neural encoding of target speech and improve speech-in-noise performance. Lastly, I will describe future research plans, including how I plan to leverage the individual hearing and cognitive profiles to predict behavioral, subcortical, and cortical metrics of speech-in-noise perception outcomes and NR benefits, and guide individualized intervention.

Zoom Info:

Meeting ID: 931 0815 8900

Passcode: 11501150


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