Research

Individual differences in speech-in-noise perception, Cortical dynamics, Subcortical encoding, Peripheral pathophysiology, Selective attention, Hearing aids, Cochlear implants, Neurofeedback training

Hearing Health Foundation (Emerging Research Grant) : 10/01/2021 – 12/31/2023

Influence of Individual Pathophysiology and Cognitive Profiles on Noise Tolerance and Noise Reduction Outcomes (Role: PI, Total Amount of Award: $100,000)

Royal National Institute for Deaf People (Flexi Grant F110): 04/01/2021 – 03/31/2022

Mechanism-based Approach to Optimization of Noise Reduction in Hearing Aids: Influence of Individual Traits on Outcomes and Preference (Role: PI, Total Amount of Award: £10,000)

Berger, J.I., Gander, P.E., Kim, S., Schwalje, A.T., Woo, J., Na, Y., Holmes, A., Hong, J., Dunn, C., Hansen, M., Gantz, B., McMurray, B. Griffiths, T.D., & Choi, I. (2023). Neural correlates of individual differences in speech-in-noise performance in a large cohort of cochlear implant users. Ear and Hearing, 44(5), 1107-1120. https://doi.org/10.1097/AUD.0000000000001357.

Shim, H., Gibbs, L., Rush, K., Ham, J., Kim, S., Kim, S., & Choi, I. (2023). Effect of neurofeedback on cortical oscillations during auditory attention training. Applied Sciences, 13(14), 8499. https://doi.org/10.3390/app13148499.

Shim, H., Kim, S., Hong, J., Gantz, B., & Choi, I. (2023). Differences in neural encoding of speech in noise between cochlear implant users with and without preserved acoustic hearing. Hearing Research, 427, 108649. https://doi.org/10.1016/j.heares.2022.108649.

Kim, S., Wu, Y.-H., Bharadwaj, H.M., & Choi, I. (2022). Effect of noise reduction on cortical speech-in-noise processing and its variance due to individual noise tolerance. Ear and Hearing, 43(3), 849-861. https://doi.org/10.1097/AUD.0000000000001144.

Kim, S., Emory, C., & Choi, I. (2021). Neurofeedback training of auditory selective attention enhances speech-in-noise perception. Frontiers in Human Neuroscience, 15, 676992. https://doi.org/10.3389/fnhum.2021.676992.

Kim, S., Schwalje, A.T., Liu, A.S., Gander, P.E., McMurray, B., Griffiths, T.D., & Choi, I. (2021). Pre- and post-target cortical processes predict speech-in-noise performance. NeuroImage, 228, 117699. https://doi.org/10.1016/j.neuroimage.2020.117699.

Kim, K., Kim, S., & Lee, J.H. (2020). Comparison of speech recognition and subjective hearing handicap in elderly listeners as a function of degree of hearing loss. Audiology and Speech Research, 16(2), 115-123. https://doi.org/10.21848/asr.200024.

Kim, S., Choi, I., Schwalje, A.T., Kim, K., & Lee, J.H. (2020). Auditory working memory explains variance in speech recognition in older listeners under adverse listening conditions. Clinical Interventions in Aging, 15, 395-406. https://doi.org/10.2147/CIA.S241976.

Choi, I., Kim, S., & Schwalje, A.T. (2020). Cortical dynamics of speech-in-noise understanding. Acoustical Science and Technology, 41(1), 400-403. https://doi.org/10.1250/ast.41.400.

Kim, S. (2022). Mechanism-based approach to potential benefits of using noise reduction in hearing aids. Keynote speech. Audiology Seminar of the Korean Academy of Audiology, Virtual.

Kim, S., Choi, I., & Wu, Y.-H. (2019). Effect of noise reduction on cortical speech processing in hearing aid users. Lecture for the special session “Acoustics Outreach to Budding Scientists: Planting Seeds for Future Clinical and Physiological Collaborations.” Meeting of the Acoustical Society of America, Louisville, KY.

Kim, S., Schwalje, A.T., Emory, C., & Choi, I. (2017). Auditory neurofeedback training of selective attention and speech recognition in noise. Poster-teaser talk. Symposium of Advances and Perspectives in Auditory Neuroscience, Washington D.C.

Choi, I., Kim, S., Schwalje, A.T., & Woo, J. (2019). Cortical dynamics of word-in-noise recognition. Acoustical Society of America, San Diego, CA. 

Choi, I., Emory, C., Kim, S., Schwalje, A.T. (2018). Neurofeedback training of auditory selective attention enhances speech-in-noise understanding. Acoustical Society of America, Minneapolis, MN. 

Kim, S., Schwalje, A.T., Gander, P.E., Liu, A.S., Griffiths, T.D., & Choi, I. (2018). Natural speech-evoked frontal cortex response reflects speech-in-noise understanding difficulty. MidWinter Meeting of the Association for Research in Otolaryngology, San Diego, CA.

Choi, I., Emory, C., Kim, S., & Gander, P.E. (2017). Selective attention ability explains variance of speech-in-noise understanding performance in cochlear implant users. MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Choi, I., Kim, S., Gander, P.E. (2016). Auditory selective attention in cochlear implant users. Acoustical Society of America, Honolulu, HI. 

Kim, S., Choi, D., Lee, J.H., & Kim, K. (2014). Measurement of working memory and sentence recognition in the elderly. Korean Academy of Audiology Conference, Chuncheon, South Korea.

Kim, S., & Bharadwaj, H.M. (2023). Neural measures of individual noise tolerance and noise-reduction outcomes. Scientific and Technology Conference of the American Auditory Society, Scottsdale, AZ.

Hong, J., Shim, H., Kim, S., Hansen, M., Gantz, B., & Choi, I. (2022). Neural correlates of speech in noise perception differences between combined electric-acoustic stimulation and standard cochlear implants. Meeting of the Acoustical Society of America, Denver, CO.

Shim, H., Kim, S., Lee, J., Gibbs, L., Rush, K., & Choi, I. (2022). Neural markers of improved auditory selective attention following neurofeedback training. Meeting of the Acoustical Society of America, Denver, CO.

Hong, J., Shim, H., Kim, S., Hansen, M., Gantz, B., & Choi, I. (2022). Differences in neural encoding of speech in noise between cochlear implants with combined electric-acoustic stimulation and electric-only. MidWinter Meeting of the Association for Research in Otolaryngology, Virtual.

Gander, P., Berger, J., Kim, S., Schwalje, A., Woo, J., Na, Y., Holmes, A., Hong, J., Dunn, C., Hansen, M., Gantz, B., McMurray, B., Griffiths, T., & Choi, I. (2022). Behavioural evidence for a relationship between auditory object formation and speech-in-noise processing in a cochlear implant population. MidWinter Meeting of the Association for Research in Otolaryngology, Virtual.

Kim, S., & Bharadwaj, H.M. (2021). Subcortical measures of individual tolerance to background noise and sensitivity to speech distortions induced by noise-reduction processing. Meeting of the Acoustical Society of America, Seattle, WA.

Kim, S., & Bharadwaj, H.M. (2021). Varying effects of hearing aid noise-reduction processing on the subcortical encoding of speech sounds across individuals. Symposium of Advances and Perspectives in Auditory Neuroscience, Virtual.

Kim, S., Choi, I., Schwalje, A.T., Kim, K., & Lee, J.H. (2021). Modality-specific association between working memory and speech recognition in older listeners under adverse listening conditions. MidWinter Meeting of the Association for Research in Otolaryngology, Virtual.

Gander, P., Berger, J., Kim, S., Schwalje, A., Woo, J., Na, Y., Holmes, A., Hong, J., Dunn, C., Hansen, M., Gantz, B., McMurray, B., Griffiths, T., & Choi, I. (2021). Evidence for neuroplasticity in EEG responses to speech-in-noise within the first year after cochlear implant activation. MidWinter Meeting of the Association for Research in Otolaryngology, Virtual.

Berger, J., Gander, P., Kim, S., Schwalje, A., Woo, J., Na, Y., Holmes, A., Hong, J., Dunn, C., Hansen, M., Gantz, B., McMurray, B., Griffiths, T., & Choi, I. (2021). Neural correlates of speech-in-noise variance in cochlear implant users. MidWinter Meeting of the Association for Research in Otolaryngology, Virtual.

Kim, S., Wu, Y.-H., & Choi, I. (2020). Electroencephalography-based optimization of noise reduction in hearing aids. MidWinter Meeting of the Association for Research in Otolaryngology, San Jose, CA.

Sarow, A., Kim, S., Geller, J., & Choi, I. (2020). The effect of selective attention training on effort during speech-in-noise perception. MidWinter Meeting of the Association for Research in Otolaryngology, San Jose, CA.

Kim, S., Geller, J., Holmes, A., McMurray, B. & Choi, I. (2019). Cortical dynamics of word-in-noise recognition in cochlear implant users. Symposium of Advances and Perspectives in Auditory Neuroscience, Chicago, IL.

Geller, J., Holmes, A., Kim, K-J., Kim, S., & Choi, I. (2019). Auditory attentional modulation in cochlear implant users. Symposium of Advances and Perspectives in Auditory Neuroscience, Chicago, IL.

Kim, S., Emory, C., Schwalje, A.T., & Choi, I. (2019). Selective attention training enhances speech-in-noise recognition. MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Kim, K-J., Giuliani, N., Kim, S., Emory, C., Litovsky, R.Y., Dunn, C.C., Gantz, B.J., & Choi, I. (2019). Cochlear implant-induced changes of speech-in-noise processes in single-sided deafness. MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Choi, I., Holmes, A., Kim, S., Schwalje, A.T., Liu, A.S., Gander, P.E., Na, Y., Woo, J., McMurray, B., & Griffiths, T.D. (2019). Neural correlates of speech-in-noise variance in cochlear implant users. MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Na, Y., Kim, S., Choi, I., & Woo, J. (2019). Phoneme-based analysis of continuous speech-evoked cortical responses reveals speech intelligibility. MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Schwalje, A.T., Kim, S., Gfeller, K., & Choi, I. (2018). Temporal coherence, but not spectral coherence, of background noise improves speech discrimination for cochlear implantees. (2018). MidWinter Meeting of the Association for Research in Otolaryngology, San Diego, CA.

Choi, I., Kim, S., Schwalje, A.T., Dunn, C.C., & Gantz, B.J. (2018). Cortical evoked responses reflect cochlear implant-induced improvement of speech-in-noise understanding in single-sided deafness. (2018). MidWinter Meeting of the Association for Research in Otolaryngology, San Diego, CA.

Choi, I., Kim, S., Schwalje, A.T., Na, Y., Gander, P.E., Liu, A.S., Woo, J., McMurray, B., & Griffiths, T.D. (2018). Frontal and auditory cortex interplay predicts variances of speech-in-noise understanding in cochlear implant users. MidWinter Meeting of the Association for Research in Otolaryngology, San Diego, CA.

Kim, S., Schwalje, A.T., Emory, C., & Choi, I. (2017). Neurofeedback training of selective attention and speech-in-noise recognition. Society for Neuroscience, Washington D.C.

Na, Y., Kim, S., Choi, I., & Woo, J. (2017). Machine-learning classification of speech-evoked electroencephalographic signals reveals speech intelligibility. Society for Neuroscience, Washington D.C.

Choi, I., Kim, S., & Schwalje, A.T. (2017). Neural substrates of behavioral performance in a speech-in-noise task. Society for Neuroscience, Washington D.C.

Schwalje, A.T., Kim, S., & Choi, I. (2017). Differential phoneme confusion patterns linked with performance in a speech-in-noise task. Society for Neuroscience, Washington D.C.

Kim, S., Schwalje, A.T., Emory, C., & Choi, I. (2017). Auditory neurofeedback training of selective attention and speech recognition in noise. Symposium of Advances and Perspectives in Auditory Neuroscience, Washington D.C.

Choi, I., Kim, S., Schwalje, A.T., Liu, A.S., Gander, P.E., Na, Y., Woo, J., McMurray, B., & Griffiths, T.D. (2017). Neural substrates of individual differences in speech-in-noise understanding ability. Symposium of Advances and Perspectives in Auditory Neuroscience, Washington D.C.

Na, Y., Kim, S., Choi, I., & Woo, J. (2017). Machine-learning classification of speech-evoked electroencephalographic signals reveals speech intelligibility. Symposium of Advances and Perspectives in Auditory Neuroscience, Washington D.C.

Kim, S., Schwalje, A.T., Emory, C., & Choi, I. (2017). Neurofeedback training on selective attention to improve speech-in-noise recognition. Iowa Speech-Language Hearing Association, West Des Moines, IA.

Choi, I., Kim, S., Schwalje, A.T., Gander, P.E., McMurray, B., & Griffiths, T.D. (2017). Cortical responses reveal individual differences in speech-in-noise understanding ability. International Conference on Auditory Cortex, Banff, Alberta, Canada.

Schwalje, A.T., Kim, S., & Choi, I. (2017). Training on temporal modulation detection to improve discernment of musical dissonance in cochlear implantees. Games for Change Festival, New York City, NY.

Kim, S., Choi, I., Kim, S., & Lansing, C.M. (2017). Contribution of selective attention ability to the performance in clinical speech-in-noise tests. American Academy of Audiology, Indianapolis, IN.

Kim, S., Griffiths, T.D., Gander, P.E., & Choi, I. (2017). Neural correlates of normal hearing listeners’ variance in the ability to understand speech in noise. American Academy of Audiology, Indianapolis, IN.

Lansing, C.M., Kim, S., Kim, S., & Choi, I. (2017). Relationship between speech-in-noise understanding performance and mismatch negativity. American Academy of Audiology, Indianapolis, IN.

Kim, S., Kim, S., Lansing, C.M., & Choi, I. (2017). Contribution of selective attention ability to the speech-in-noise understanding performance. Scientific and Technology Conference of the American Auditory Society, Scottsdale, AZ.

Liu, A.S., Hubbard, A.D., Kim, S., & Choi, I. (2017). Frontal P2 cortical evoked potentials in response to ongoing speech. MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Kim, S., Griffiths, T.D., Gander, P.E., & Choi, I. (2017). Neural correlates of variance in speech-in-noise understanding performance. MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Kim, S., Wu, Y.H., & Bentler, R.A. (2016). Importance of optimizing audibility during the hearing aid fitting to ensure real-world benefit. Iowa Speech-Language Hearing Association, Iowa City, IA.

Kim, S., Wu, Y.H., Stangl, E.A., Miller, C., Bishop, C.W., Tremblay, K.L., & Bentler, R.A. (2016). Contribution of aided audibility to real-world hearing aid outcomes. Scientific and Technology Conference of the American Auditory Society, Scottsdale, AZ.

Kim, S., Kim, K., & Lee, J.H. (2015). How working memory of the elderly is related to sentence recognition in adverse listening conditions?. Korean Audiological Society Conference, Seoul, South Korea.

Kim, S. Belt-Type Portable Hearing Loop Device for Hearing Aid User, KR 1019126320000, Oct 2018. https://doi.org/10.8080/1020170116048 

Kim, S. Hearing Protection Earmuffs for Military Use, KR 1016962700000, Jan 2017. https://doi.org/10.8080/1020150134493 

Kim, S. ITE Type Hearing Aid Which Is Doubly Coated, KR 1013851890000, April 2014. https://doi.org/10.8080/1020120098151