For a complete and constantly up-to-date list of works, visit HANG on Notion

Published Papers

1. Choi, I., Kim, S., Schwalje, A. (In Press). Cortical dynamics of speech-in-noise understanding. Acoustical Science and Technology. Vol. 41.

2. Deng, Y., Choi, I., Shinn-Cunningham, B., Baumgartner, R. (In Press). Impoverished auditory cues limit engagement of brain networks controlling spatial selective attention. NeuroImage, 202. | https://www.biorxiv.org/content/10.1101/533117v2.abstract

3. Bharadwaj, H., Mai, A. R., Simpson, J. M., Choi, I., Heinz, M. G., Shinn-Cunningham, B. G. (2019). Non-Invasive Assays of Cochlear Synaptopathy -- Candidates and Considerations. Neuroscience, 407, 53-66. | https://www.sciencedirect.com/science/article/pii/S0306452219301423

4. Na, Y., Choi, I., Jang, D. P., Kang, J. K., Woo, J. (2019). Semantic-hierarchical model improves classification of spoken-word evoked electrocorticography. Journal of Neuroscience Methods, 311, 253-258. | https://www.sciencedirect.com/science/article/pii/S0165027018303480

5. Bonnard, D., Schwalje, A., Gantz, B., Choi, I. (2018). Electric and Acoustic Fusion Ability Predicts Speech-in-Noise Performance in Hybrid Cochlear Implant Users. Hearing Research, 367, 223-230. | https://www.sciencedirect.com/science/article/pii/S0378595518300959

6. Pak, J., Choi, I., Jin, Y. G., Shin, J. W. (2017). Multichannel speech reinforcement based on binaural unmasking. Signal Processing, 139, 165-172. | https://www.sciencedirect.com/science/article/pii/S0165168417301615

7. Yang, H., An, S., Jeong, J., Choi, I., Woo, J. (2016). Automatic Directional-gain Control for Binaural Hearing Aids using Geomagnetic Sensors. Journal of Biomedical Engineering Research, 37, 209-214. |  http://www.koreascience.or.kr/article/JAKO201608967046864.page

8. Kim, C. S., Kim, S. Y., Choi, H., Koo, J.-W., Yoo, S.-Y., An, G. S., Lee, K., Choi, I., Song, J.-J. (2016). Transmastoid reshaping of the sigmoid sinus: preliminary study of a novel surgical method to quiet pulsatile tinnitus of an unrecognized vascular origin. Journal of Neurosurgery, 125(2), 441-449. | https://thejns.org/view/journals/j-neurosurg/125/2/article-p441.xml

9. Song, J.-J., An, G. S., Choi, I., Ridder, D. D., Kim, S. Y., Choi, H. S., Park, J. H., Choi, B. Y., Koo, J.-W., Lee, K. (2016). Objectification and differential diagnosis of vascular pulsatile tinnitus by transcanal sound recording and spectrotemporal analysis: A preliminary study. Otology & Neurotology, 37(6). |  https://journals.lww.com/otology-neurotology/fulltext/2016/07000/Objectification_and_Differential_Diagnosis_of.1.aspx

10. Kim, S. H., An, G. S., Choi, I., Koo, J.-W., Lee, K., Song, J.-J. (2016). Pre-treatment objective diagnosis and post-treatment outcome evaluation in patients with vascular pulsatile tinnitus using transcanal recording and spectro-temporal analysis. PLoS One, 11(6), e0157722. |  https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0157722

11. Choi, I. (2016). Recent Studies on Supra-Threshold Auditory Processing Deficits. Audiology and Speech Research, 12(Suppl 1), S21-S23. | https://www.e-asr.org/journal/view.php?number=290 

12. Choi, I., Bharadwaj, H., Bressler, S., Loui, P., Lee, K., Shinn-Cunningham, B. G. (2014). Automatic processing of abstract musical tonality. Frontiers in Human Neuroscience, 8. | https://www.frontiersin.org/articles/10.3389/fnhum.2014.00988/full 

13. Choi, I., Wang, L., Bharadwaj, H., Shinn-Cunningham, B. G. (2014). Individual differences in attentional modulation of cortical responses correlate with selective attention performance. Hearing Research, 314, 10-19. | https://www.sciencedirect.com/science/article/pii/S0378595514000744 

14. Seo, J. H., Chon, S. B., Sung, K. M., Choi, I. (2013). Perceptual Objective Quality Evaluation Method for High Quality Multichannel Audio Codecs. Journal of the Audio Engineering Society, 61(7/8), 535-545. | http://www.aes.org/e-lib/browse.cfm?elib=16869 

15. Choi, I., Rajaram, S., Varghese, L. A., Shinn-Cunningham, B. G. (2013). Quantifying attentional modulation of auditory-evoked cortical responses from single-trial electroencephalography. Frontiers in Human Neuroscience, 7. | https://www.frontiersin.org/articles/10.3389/fnhum.2013.00115/full

16. Seo, J. H., Choi, I., Chon, S. B., Sung, K. M. (2011). An Improved Method for Objective Quality Assessment of Multichannel Audio Codecs. IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 94(8), 1747-1752. | https://www.jstage.jst.go.jp/article/transfun/E94.A/8/E94.A_8_1747/_article/-char/ja/ 

17. Choi, I., Shinn-Cunningham, B. G., Chon, S. B., Sung, K.-M. (2008). Objective measurement of perceived auditory quality in multichannel audio compression coding systems. Journal of the Audio Engineering Society, 56(1/2), 3-17. |  http://www.aes.org/e-lib/browse.cfm?elib=14371

18. Chon, S. B., Choi, I., Lee, M., & Sung, K. M. (2007). Objectively quantified consonance of complex sounds. Journal of the Acoustical Society of Korea, 26(7). 323-327. | http://www.koreascience.or.kr/article/JAKO200709906380616.page

19. Chon, S. B., Choi, I., Seo, J., & Sung, K. M. (2005). Variable bit quantization for virtual source location information in spatial audio coding. In Advances in Multimedia Information Processing-PCM 2005 (pp. 709-719). Springer Berlin Heidelberg. | https://link.springer.com/chapter/10.1007/11581772_62

Publications in Progress

1. Deng, Y., Choi, I., Shinn-Cunningham, B. (In Revision). Topographic specificity of alpha power during auditory spatial attention. NeuroImage | https://www.biorxiv.org/content/10.1101/681361v1.abstract

2. Deng, Y., Reinhart, R., Choi, I., Shinn-Cunningham, B. (In Revision). Causal links between parietal alpha activity and spatial auditory attention. eLife. | https://www.biorxiv.org/content/10.1101/775718v1.abstract 

3. Yang, H., Won, J., Choi, I., Woo, J. (In Revision). Differential effects of channel masking induced by varying electrode to auditory nerve fiber distances on spectral resolution of cochlear implants. PLoS One. | 

4. Kim, S., Schwalje, A., Liu, A., Gander, P., McMurray, B., Griffiths, T., Choi, I. (Under Review). External and Internal Signal-to-noise Ratios Alter Timing and Location of Cortical Activities During Speech-in-noise Perception. Journal of Neuroscience | https://www.biorxiv.org/content/10.1101/817460v1.abstract

5. Deng, Y., Shinn-Cunningham, B., Choi, I. (In Preparation). Differences in cortical processing during spatial and non-spatial divided auditory attention. 

6. Kim, K., Kim, S., Litovsky, R., Dunn, C., Gantz, B., Choi, I. (In Preparation). Cochlear implant-induced changes of speech-in-noise processes in single-sided deafness.

7. Kim, S., Emory, C., Choi, I. (In Preparation). Neurofeedback training of auditory selective attention enhances speech-in-noise perception. | https://asa.scitation.org/doi/abs/10.1121/1.5036451

Posters/ Presentations

Association for Research in Otolaryngology

2019

Kim, S., Emory, C., Schwalje, A.T., & Choi, I. (2019). Selective Attention Training Enhances Speech-in-Noise Recognition. Poster presentation at the 42^nd Annual 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. Poster presentation at the 42^nd Annual 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. Poster presentation at the 42^nd Annual MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Kim, S., Choi, I., & Schwalje, A.T. (2019). Sound localization training using augmented reality. Podium presentation at the 42^nd Annual 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. Poster presentation at the 42^nd Annual MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Gander, P.E., Ponto, L., Choi, I., McMurray, B., & Griffiths, T.D. (2019). O-15 water PET study of speech in noise processing in cochlear implant patients. Poster presentation at the 42^nd Annual MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Bonnard, D., Schwalje, A.T., & Choi, I. Duplex pitch perception in hybrid cochlear implants. Podium presentation at the 42^nd Annual MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

2018

Choi, I., Schwalje, A.T., Gantz, B., & Bonnard, D. (2018). Electric and acoustic pitch fusion ability predicts speech-in-noise performance in hybrid cochlear implant users. Poster presentation at the 41^st Annual MidWinter Meeting of the Association for Research in Otolaryngology, San Diego, CA.

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). Poster presentation at the 41^st Annual 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). Poster presentation at the 41^st Annual 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. Poster presentation at the 41^st Annual MidWinter Meeting of the Association for Research in Otolaryngology, San Diego, CA.

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. Podium presentation at the 41^st Annual MidWinter Meeting of the Association for Research in Otolaryngology, San Diego, CA.

2017

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. Podium presentation at the 40^th Annual MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Liu, A.S., Hubbard, A.D., Kim, S., & Choi, I. (2017). Frontal P2 cortical evoked potentials in response to ongoing speech. Poster presentation at the 40^th Annual 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. Poster presentation at the 40^th Annual MidWinter Meeting of the Association for Research in Otolaryngology, Baltimore, MD.

Advances and Perspectives in Auditory Neuroscience & Society for Neuroscience

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

Kim, S., Schwalje, A.T., Emory, C., & Choi, I. (2017). Neurofeedback training of selective attention and speech-in-noise recognition. Poster presentation at the 47th annual meeting of 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. Poster presentation at the 47th annual meeting of 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. Poster presentation at the 47th annual meeting of 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. Poster presentation at the 47th annual meeting of 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. Poster presentation at the annual 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. Poster presentation at the annual 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. Poster presentation at the annual symposium of Advances and Perspectives in Auditory Neuroscience, Washington D.C.

Acoustical Society of America

Kim, S., Choi, I., & Wu, Y.H. (2019). Effect of noise reduction on cortical speech processing in hearing aid users. Invited lecture for the special session “Acoustics Outreach to Budding Scientists: Planting Seeds for Future Clinical and Physiological Collaborations” at the 177th Meeting of the Acoustical Society of America, Louisville, KY.

Choi, I., Emory, C., Kim, S., Schwalje, A.T. (2018). Neurofeedback training of auditory selective attention enhances speech-in-noise understanding. Podium presentation at the 175^th meeting of the Acoustical Society of America, Minneapolis, MN.

Choi, I., Kim, S., Gander, P.E. (2016). Auditory selective attention in cochlear implant users. Podium presentation at the 172^nd meeting of the Acoustical Society of America, Honolulu, HI.

Audiology Conferences

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. Poster presentation at the annual conference of the 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. Poster presentation at the annual conference of the 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. Poster presentation at the 44^th Annual Scientific and Technology Conference of the American Auditory Society, Scottsdale, AZ.

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

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. Poster presentation at the 43^rd Annual Scientific and Technology Conference of the American Auditory Society, Scottsdale, AZ.

Local and other conferences

Kim, S., Schwalje, A.T., Emory, C., & Choi, I. (2017). Neurofeedback training on selective attention to improve speech-in-noise recognition. Poster presentation at the annual convention of 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. Poster presentation at the 6^th 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. Poster presentation at the Games for Change Festival, New York City, NY.

Emory, C., Kim, S., & Choi, I. (2017). Effect of neurofeedback training for auditory selective attention on speech in noise performance. Poster presentation at the 13^th Annual Spring Undergraduate Research Festival, Iowa City, IA.

Emory, C., Kim, S., & Choi, I. (2016). Auditory Selective Attention Training. Poster presentation at the 7^th Annual Fall Undergraduate Research Festival, Iowa City, IA.

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