Kyung Hwan Kim

Summary

Publications

  1. ncbi request reprint Emotion recognition system using short-term monitoring of physiological signals
    K H Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, South Korea
    Med Biol Eng Comput 42:419-27. 2004
  2. ncbi request reprint Method for unsupervised classification of multiunit neural signal recording under low signal-to-noise ratio
    Kyung Hwan Kim
    Human Computer Interaction Laboratory, Samsung Advanced Institute of Technology, Yongin 499 712, Korea
    IEEE Trans Biomed Eng 50:421-31. 2003
  3. ncbi request reprint Spatiotemporal brain activation pattern during word/picture perception by native Koreans
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon Do, 220 710, South Korea
    Neuroreport 15:1099-103. 2004
  4. ncbi request reprint Improved ballistocardiac artifact removal from the electroencephalogram recorded in fMRI
    Kyung Hwan Kim
    Department of Biomedical Engineering, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    J Neurosci Methods 135:193-203. 2004
  5. doi request reprint Fronto-temporal interactions in the theta-band during auditory deviant processing
    Jeong Woo Choi
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Gangwon Do, 220 710, Republic of Korea
    Neurosci Lett 548:120-5. 2013
  6. ncbi request reprint Decoding of retinal ganglion cell spike trains evoked by temporally patterned electrical stimulation
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    Brain Res 1348:71-83. 2010
  7. pmc A sound processor for cochlear implant using a simple dual path nonlinear model of basilar membrane
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, Republic of Korea
    Comput Math Methods Med 2013:153039. 2013
  8. ncbi request reprint Influence of task difficulty on the features of event-related potential during visual oddball task
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    Neurosci Lett 445:179-83. 2008
  9. doi request reprint Changes in gamma-band power and phase synchronization with the difficulty of a visual oddball task
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science Yonsei University, 234 Maeji ri, Heungup myun, Wonju Kangwon do 220 710, South Korea
    Brain Res 1236:105-12. 2008
  10. doi request reprint Temporal response properties of retinal ganglion cells in rd1 mice evoked by amplitude-modulated electrical pulse trains
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, Kangwon Do, South Korea
    Invest Ophthalmol Vis Sci 51:6762-9. 2010

Collaborators

  • Yong Sook Goo
  • Ki Young Jung
  • Jeong Woo Choi
  • Jin Woo Chang
  • Chang Hwan Im
  • Dong Soo Kim
  • Hyo Woon Yoon
  • Sang Baek Ryu
  • Chi Hyun Kim
  • Jang Hee Ye
  • Yeong Min Yoo
  • Wan Namkung
  • Han Jeong Hwang
  • Jong Seung Lee
  • Kyungsoo Park
  • Min Goo Lee
  • Tetsuo Hayakawa
  • Ji Hyun Lee
  • Sang Hui Chu
  • Hyeyoung Kim
  • Ji Hye Seo
  • Ji Hyun Kwag
  • Yong Sup Hwang
  • Young Jin Jung
  • Eun Kyung Bae
  • Hyun Joo Lee
  • Yong Ho Lee
  • Hyung Cheul Shin
  • Yu Seun Kim
  • Min Soo Park
  • Kwang Il Kwon
  • Yoon Jung Lee
  • Mi Ook Cho
  • Naofumi Mukaida
  • Joo Hyun Nam
  • Vay Liang W Go
  • Satoru Naruse
  • Yousin Suh
  • Sung Joon Kim
  • Joo Weon Lim
  • Jong Eun Lee
  • Seung Woo Park
  • In Jin Jang
  • Joo Heon Yoon
  • Jeong Yeon Seo
  • Si Young Song
  • John W Hanrahan

Detail Information

Publications36

  1. ncbi request reprint Emotion recognition system using short-term monitoring of physiological signals
    K H Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, South Korea
    Med Biol Eng Comput 42:419-27. 2004
    ..A support vector machine was adopted as a pattern classifier to resolve this difficulty. Correct-classification ratios for 50 subjects were 78.4% and 61.8%, for the recognition of three and four categories, respectively...
  2. ncbi request reprint Method for unsupervised classification of multiunit neural signal recording under low signal-to-noise ratio
    Kyung Hwan Kim
    Human Computer Interaction Laboratory, Samsung Advanced Institute of Technology, Yongin 499 712, Korea
    IEEE Trans Biomed Eng 50:421-31. 2003
    ..The classification method yielded correct classification ratio as high as 95%, for data where it was only 66% when a kappa-means-type algorithm was used for the classification stage...
  3. ncbi request reprint Spatiotemporal brain activation pattern during word/picture perception by native Koreans
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon Do, 220 710, South Korea
    Neuroreport 15:1099-103. 2004
    ....
  4. ncbi request reprint Improved ballistocardiac artifact removal from the electroencephalogram recorded in fMRI
    Kyung Hwan Kim
    Department of Biomedical Engineering, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    J Neurosci Methods 135:193-203. 2004
    ..The performance of our system has been assessed using simulated data based on experimental data of various spectral characteristics, and actual experimental data of alpha-wave-dominant normal EEG and epileptic EEG...
  5. doi request reprint Fronto-temporal interactions in the theta-band during auditory deviant processing
    Jeong Woo Choi
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Gangwon Do, 220 710, Republic of Korea
    Neurosci Lett 548:120-5. 2013
    ..Our results support the hypothesis that fronto-temporal interactions are crucial to the generation of MMN during auditory deviant processing. ..
  6. ncbi request reprint Decoding of retinal ganglion cell spike trains evoked by temporally patterned electrical stimulation
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    Brain Res 1348:71-83. 2010
    ..These results suggest that pulse amplitude modulation is a feasible means to encode temporal visual information by RGC spike trains and thus to implement stimulus encoding strategies for retinal prostheses...
  7. pmc A sound processor for cochlear implant using a simple dual path nonlinear model of basilar membrane
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, Republic of Korea
    Comput Math Methods Med 2013:153039. 2013
    ....
  8. ncbi request reprint Influence of task difficulty on the features of event-related potential during visual oddball task
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    Neurosci Lett 445:179-83. 2008
    ..The P2 amplitude and latency were more notably correlated with response time for the more difficult task...
  9. doi request reprint Changes in gamma-band power and phase synchronization with the difficulty of a visual oddball task
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science Yonsei University, 234 Maeji ri, Heungup myun, Wonju Kangwon do 220 710, South Korea
    Brain Res 1236:105-12. 2008
    ..This may imply that the difficulty-related change in cortical information processing was implemented as a change in the spatiotemporal pattern of interregional connectivity...
  10. doi request reprint Temporal response properties of retinal ganglion cells in rd1 mice evoked by amplitude-modulated electrical pulse trains
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, Kangwon Do, South Korea
    Invest Ophthalmol Vis Sci 51:6762-9. 2010
    ..The electrophysiological properties of degenerated retinas responding to amplitude-modulated electrical pulse trains were investigated to provide a guideline for the development of a stimulation strategy for retinal prostheses...
  11. doi request reprint Decoding of temporal visual information from electrically evoked retinal ganglion cell activities in photoreceptor-degenerated retinas
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Kangwon Do, South Korea
    Invest Ophthalmol Vis Sci 52:6271-8. 2011
    ..In this study, the RGC responses in photoreceptor-degenerated retinas were shown to actually encode temporal information on visual input when they were stimulated by biphasic pulse trains with amplitude modulation...
  12. doi request reprint Difference in gamma-band phase synchronization during semantic processing of visually presented words from primary and secondary languages
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon Do, 220 710, South Korea
    Brain Res 1291:82-91. 2009
    ..This finding indicates that differences in cortical activities due to language differences are more evident in inter-regional connectivity during semantic analysis than during other stages, such as orthographic processing...
  13. ncbi request reprint Improvement of spike train decoder under spike detection and classification errors using support vector machine
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, 220 710 Heungup myun, Wonju, Kangwon Do, South Korea
    Med Biol Eng Comput 44:124-30. 2006
    ..The results suggest the possibility that a neuroprosthetic device with a low-quality spike sorting preprocessor can be achieved by adopting a spike train decoder that is robust to spike sorting errors...
  14. ncbi request reprint Superiority of nonlinear mapping in decoding multiple single-unit neuronal spike trains: a simulation study
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, Kangwon Do, South Korea
    J Neurosci Methods 150:202-11. 2006
    ..The nonlinear SVR showed the highest performance, and this may be due to the superiority of SVR in training and generalization...
  15. ncbi request reprint Analysis of induced gamma-band activity in EEG during visual perception of Korean, English, Chinese words
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    Neurosci Lett 403:216-21. 2006
    ..The GBAs in the prefrontal and temporal sites were significantly correlated with response time. The differences in spatiotemporal patterns of GBA among languages were not prominent compared to inter-individual differences...
  16. doi request reprint Changes in gamma- and theta-band phase synchronization patterns due to the difficulty of auditory oddball task
    Jeong Woo Choi
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup, Wonju, Kangwon Do, 220 710, South Korea
    Neurosci Lett 468:156-60. 2010
    ..The overall result is in agreement with our recent study which reported similar difference in PS due to the difficulty of 'visual' oddball task...
  17. pmc Electrically-evoked Neural Activities of rd1 Mice Retinal Ganglion Cells by Repetitive Pulse Stimulation
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju 220 710, Korea
    Korean J Physiol Pharmacol 13:443-8. 2009
    ..The results suggest that the evoked neural activities of RGCs in degenerated retina can be reliably controlled by pulse frequency modulation, and may be used as a stimulation strategy for visual neural prosthesis...
  18. ncbi request reprint Melatonin-induced autophagy is associated with degradation of MyoD protein in C2C12 myoblast cells
    Chi Hyun Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, Gangwon Do, Korea
    J Pineal Res 53:289-97. 2012
    ..Together, these results suggest that melatonin (1, 2mm)-induced autophagy results in partial lysosomal degradation of MyoD protein in C2C12 myoblast cells...
  19. pmc Accurate Representation of Light-intensity Information by the Neural Activities of Independently Firing Retinal Ganglion Cells
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju 220 710, Korea
    Korean J Physiol Pharmacol 13:221-7. 2009
    ..This implies that stimulation of independently-firing RGCs and RGCs of different types may be beneficial for visual function restoration by retinal prosthesis...
  20. pmc Reduced neural synchrony in patients with restless legs syndrome during a visual oddball task
    Jeong Woo Choi
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, South Korea
    PLoS ONE 7:e42312. 2012
    ..As an effort to clarifying this, we investigated the differences in neural activity and phase synchrony between healthy controls and RLS patients during cognitive task performances...
  21. doi request reprint A quantitative comparison of basal ganglia neuronal activities of normal and Parkinson's disease model rats
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju 220 710, Gangwon Do, Republic of Korea
    Neurosci Lett 505:113-8. 2011
    ..This enables a simple algorithm based on burst detection and the shape of the interspike interval histogram to identify whether the neuronal activity is from normal or PD model rats...
  22. doi request reprint An EEG-based real-time cortical functional connectivity imaging system
    Han Jeong Hwang
    Department of Biomedical Engineering, Hanyang University, 17 Haengdang dong, Seongdong Gu, Seoul 133 791, South Korea
    Med Biol Eng Comput 49:985-95. 2011
    ..We expect our system to be applicable to various potential applications, including real-time diagnosis of psychiatric diseases and EEG neurofeedback...
  23. ncbi request reprint Effects of neuropeptides and mechanical loading on bone cell resorption in vitro
    Yeong Min Yoo
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, Gangwon do 220 710, Korea
    Int J Mol Sci 15:5874-83. 2014
    ..These results suggest that neuropeptides CGRP and VIP have an important role in suppressing bone resorptive activities through RANKL/OPG pathway, similar to mechanical loading. ..
  24. doi request reprint Characterization of retinal ganglion cell activities evoked by temporally patterned electrical stimulation for the development of stimulus encoding strategies for retinal implants
    Sang Baek Ryu
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    Brain Res 1275:33-42. 2009
    ..The similarity between the RGC firing rate and the temporal pulse intensity pattern was highest when the pulse amplitude was modulated within this range. The optimal pulse rate range could be similarly determined...
  25. ncbi request reprint Comparison of spatiotemporal cortical activation pattern during visual perception of Korean, English, Chinese words: an event-related potential study
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, 234 Maeji ri, Heungup myun, Wonju, Kangwon do 220 710, South Korea
    Neurosci Lett 394:227-32. 2006
    ....
  26. doi request reprint An improved speech processing strategy for cochlear implants based on an active nonlinear filterbank model of the biological cochlea
    Kyung Hwan Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju 220 710, Korea
    IEEE Trans Biomed Eng 56:828-36. 2009
    ..Acoustic simulation and hearing experiments showed that the DRNL-based nonlinear strategy improves speech performance in a speech-spectrum-shaped noise...
  27. doi request reprint Melatonin protects against apoptotic and autophagic cell death in C2C12 murine myoblast cells
    Chi Hyun Kim
    Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, Gangwon Do, Korea
    J Pineal Res 50:241-9. 2011
    ....
  28. ncbi request reprint An fMRI study of Chinese character reading and picture naming by native Korean speakers
    Hyo Woon Yoon
    fMRI Laboratory of Brain Science Research Center, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
    Neurosci Lett 392:90-5. 2006
    ....
  29. ncbi request reprint A wavelet-based method for action potential detection from extracellular neural signal recording with low signal-to-noise ratio
    Kyung Hwan Kim
    Functional Magnetic Resonance Imaging fMRI Laboratory, Brain Science Research Center, KAIST, Daejeon 305 701, Korea
    IEEE Trans Biomed Eng 50:999-1011. 2003
    ..A detection ratio higher than 80% at a false alarm ratio lower than 10% was achieved, under an SNR of 2.35 for the rat cortex data where the spectral similarity was very high...
  30. ncbi request reprint 2nd international symposium: Frontiers in pancreatic research-from basics to clinic and exocrine glands, Japan-Korea
    Tetsuo Hayakawa
    Nagoya University School of Medicine, Nagoya, Japan
    Pancreas 26:e1-11. 2003
  31. ncbi request reprint Role of NF-kappaB and AP-1 on Helicobater pylori-induced IL-8 expression in AGS cells
    Sang Hui Chu
    Department of Pharmacology and Institute of Gastroenterology, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
    Dig Dis Sci 48:257-65. 2003
    ..Antioxidants such as NAC might be useful anti-inflammatory agents by inhibiting activation of transcription factors and decreasing IL-8 production in H. pylori-induced gastric inflammation...
  32. ncbi request reprint A haplotype-based molecular analysis of CFTR mutations associated with respiratory and pancreatic diseases
    Ji Hyun Lee
    Department of Pharmacology, Yonsei University College of Medicine, 134 Sinchon dong, Seoul 120 752, Korea
    Hum Mol Genet 12:2321-32. 2003
    ..Importantly, the results also reveal that interactions between multiple genetic variants in cis affect the final function of the gene products...
  33. ncbi request reprint MRP2 haplotypes confer differential susceptibility to toxic liver injury
    Ji Ha Choi
    Department of Pharmacology, Institute of Gastroenterology, Yonsei University College of Medicine, 134 Sinchon Dong Seoul 120 752, Korea
    Pharmacogenet Genomics 17:403-15. 2007
    ..Therefore, polymorphisms and mutations in the MRP2 gene may affect individual susceptibility to hepatotoxic reactions...
  34. ncbi request reprint Base treatment corrects defects due to misfolding of mutant cystic fibrosis transmembrane conductance regulator
    Wan Namkung
    Department of Pharmacology, Institute of Gastroenterology, and Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
    Gastroenterology 129:1979-90. 2005
    ..Therefore, the inhibition of retrograde Golgi-to-endoplasmic reticulum traffic by the alkalinization of Golgi lumen may permit functional DeltaF508 protein to reach the cell surface...
  35. ncbi request reprint A randomized, open-label, two-period, crossover bioavailability study of two oral formulations of tacrolimus in healthy Korean adults
    Kyungsoo Park
    Department of Pharmacology, Yonsei University College of Medicine, Seoul, South Korea
    Clin Ther 29:154-62. 2007
    ..Tacrolimus is a macrolide immunosuppressant used in transplantation. It has been shown to have a comparable therapeutic effect and a low adverse drug reaction profile relative to cyclosporme...
  36. ncbi request reprint Cyclooxygenase-2 expression by transcription factors in Helicobacter pylori-infected gastric epithelial cells: comparison between HP 99 and NCTC 11637
    Ji Hye Seo
    Department of Pharmacology and Institute of Gastroenterology, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul 120 752, Korea
    Ann N Y Acad Sci 973:477-80. 2002
    ..HP 99 showed much higher activation of AP-1 compared to NCTC 11637. NF-kappaB might play an important role in COX-2 expression in H. pylori-induced gastric inflammation as compared to other transcription factors...