Sangtae Ahn, Ph.D. - Publications

Affiliations: 
2016-2020 Department of Psychiatry University of North Carolina, Chapel Hill, Chapel Hill, NC 
 2020- School of Electronics Engineering Kyungpook National University, Daegu, South Korea 
Area:
Neuroscience, Artificial Intelligence

23/77 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2021 Ahn S, Fröhlich F. Pinging the Brain with Transcranial Magnetic Stimulation Reveals Cortical Reactivity in Time and Space. Brain Stimulation. PMID 33516859 DOI: 10.1016/j.brs.2021.01.018  0.72
2020 Riddle J, Ahn S, McPherson T, Girdler S, Frohlich F. Progesterone modulates theta oscillations in the frontal-parietal network. Psychophysiology. 57: e13632. PMID 33400260 DOI: 10.1111/psyp.13632  0.56
2020 Riddle J, McPherson T, Atkins AK, Walker C, Ahn S, Frohlich F. Brain-derived neurotrophic factor (BDNF) polymorphism may influence the efficacy of tACS to modulate neural oscillations. Brain Stimulation. PMID 32330606 DOI: 10.1016/j.brs.2020.04.012  0.56
2020 Mattoni M, Ahn S, Fröhlich C, Fröhlich F. Exploring the relationship between geomagnetic activity and human heart rate variability. European Journal of Applied Physiology. PMID 32306151 DOI: 10.1007/s00421-020-04369-7  0.72
2020 Baek HJ, Kim HS, Ahn M, Cho H, Ahn S. Ergonomic Issues in Brain-Computer Interface Technologies: Current Status, Challenges, and Future Direction. Computational Intelligence and Neuroscience. 2020: 4876397. PMID 32089668 DOI: 10.1155/2020/4876397  1
2019 Prim JH, Ahn S, Davila MI, Alexander ML, McCulloch KL, Fröhlich F. Targeting the Autonomic Nervous System Balance in Patients with Chronic Low Back Pain Using Transcranial Alternating Current Stimulation: A Randomized, Crossover, Double-Blind, Placebo-Controlled Pilot Study. Journal of Pain Research. 12: 3265-3277. PMID 31849514 DOI: 10.2147/JPR.S208030  0.72
2019 Ahn S, Lustenberger C, Jarskog LF, Fröhlich F. Neurophysiological substrates of configural face perception in schizotypy. Schizophrenia Research. PMID 31801677 DOI: 10.1016/j.schres.2019.11.005  0.72
2018 Sheffield A, Ahn S, Alagapan S, Fröhlich F. Modulating Neural Oscillations by Transcranial Static Magnetic Field Stimulation of the Dorsolateral Prefrontal Cortex: A crossover, double-blind, sham-controlled pilot study. The European Journal of Neuroscience. PMID 30380175 DOI: 10.1111/ejn.14232  0.72
2018 Ahn S, Mellin JM, Alagapan S, Alexander ML, Gilmore JH, Jarskog LF, Fröhlich F. Targeting reduced neural oscillations in patients with schizophrenia by transcranial alternating current stimulation. Neuroimage. PMID 30367952 DOI: 10.1016/j.neuroimage.2018.10.056  0.72
2018 Ahn S, Prim JH, Alexander ML, McCulloch KL, Fröhlich F. Identifying and Engaging Neuronal Oscillations by Transcranial Alternating Current Stimulation in Patients with Chronic Low Back Pain: A Randomized, Crossover, Double-Blind, Sham-Controlled Pilot Study. The Journal of Pain : Official Journal of the American Pain Society. PMID 30268803 DOI: 10.1016/j.jpain.2018.09.004  0.72
2018 Ahn M, Cho H, Ahn S, Jun SC. User's Self-Prediction of Performance in Motor Imagery Brain-Computer Interface. Frontiers in Human Neuroscience. 12: 59. PMID 29497370 DOI: 10.3389/fnhum.2018.00059  1
2017 Ahn S, Jun SC. Multi-Modal Integration of EEG-fNIRS for Brain-Computer Interfaces - Current Limitations and Future Directions. Frontiers in Human Neuroscience. 11: 503. PMID 29093673 DOI: 10.3389/fnhum.2017.00503  1
2017 Ahn S, Cho H, Kwon M, Kim K, Kwon H, Kim BS, Chang WS, Chang JW, Jun SC. Interbrain phase synchronization during turn-taking verbal interaction-a hyperscanning study using simultaneous EEG/MEG. Human Brain Mapping. PMID 29024193 DOI: 10.1002/hbm.23834  1
2017 Cho H, Kang MK, Ahn S, Kwon M, Yoon KJ, Kim K, Jun SC. Cognitive responses and cortical oscillatory processing at various stereoscopic depths - a simultaneous EEG/MEG study. Journal of Integrative Neuroscience. 16: 255-273. PMID 28891514 DOI: 10.3233/JIN-170018  1
2017 Cho H, Ahn M, Ahn S, Kwon M, Jun SC. EEG datasets for motor imagery brain computer interface. Gigascience. PMID 28472337 DOI: 10.1093/gigascience/gix034  1
2017 Nguyen T, Ahn S, Jang H, Jun SC, Kim JG. Utilization of a combined EEG/NIRS system to predict driver drowsiness. Scientific Reports. 7: 43933. PMID 28266633 DOI: 10.1038/srep43933  1
2016 Cho H, Kang MK, Ahn S, Kwon M, Yoon KJ, Kim K, Jun SC. Cortical Responses and Shape Complexity of Stereoscopic Image - A Simultaneous EEG/MEG Study. Neuro-Signals. 24: 102-112. PMID 27771723 DOI: 10.1159/000442617  1
2016 Ahn S, Nguyen T, Jang H, Kim JG, Jun SC. Exploring Neuro-Physiological Correlates of Drivers' Mental Fatigue Caused by Sleep Deprivation Using Simultaneous EEG, ECG, and fNIRS Data. Frontiers in Human Neuroscience. 10: 219. PMID 27242483 DOI: 10.3389/fnhum.2016.00219  1
2015 Ahn S, Kim K, Jun SC. Steady-State Somatosensory Evoked Potential for Brain-Computer Interface-Present and Future. Frontiers in Human Neuroscience. 9: 716. PMID 26834611 DOI: 10.3389/fnhum.2015.00716  1
2014 Ahn S, Ahn M, Cho H, Chan Jun S. Achieving a hybrid brain-computer interface with tactile selective attention and motor imagery. Journal of Neural Engineering. 11: 066004. PMID 25307730 DOI: 10.1088/1741-2560/11/6/066004  1
2013 Ahn M, Ahn S, Hong JH, Cho H, Kim K, Kim BS, Chang JW, Jun SC. Gamma band activity associated with BCI performance: simultaneous MEG/EEG study. Frontiers in Human Neuroscience. 7: 848. PMID 24367322 DOI: 10.3389/fnhum.2013.00848  1
2013 Ahn M, Cho H, Ahn S, Jun SC. High theta and low alpha powers may be indicative of BCI-illiteracy in motor imagery. Plos One. 8: e80886. PMID 24278339 DOI: 10.1371/journal.pone.0080886  1
2012 Ahn S, Kim D, Hong JH, Jun SC. Effect of realistic human head modelling on brain source distribution Electronics Letters. 48: 1095-1097. DOI: 10.1049/el.2012.1569  1
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2016 Ahn S. Theoretical analysis of resolution and noise properties of PET image reconstruction with and without sinogram blurring modeling 2014 Ieee Nuclear Science Symposium and Medical Imaging Conference, Nss/Mic 2014. DOI: 10.1109/NSSMIC.2014.7430760  0.04
2015 Wangerin KA, Ahn S, Ross SG, Kinahan PE, Manjeshwar RM. Improving lesion detectability in PET imaging with a penalized likelihood reconstruction algorithm Progress in Biomedical Optics and Imaging - Proceedings of Spie. 9416. DOI: 10.1117/12.2082301  0.04
2021 Najjar S, Ahn S, Umrau K, Erdem Arslan M, Jennings TA, Whyte C, Lee H. Increasing Trend of Calretinin-Positive Mucosal Innervation from Aganglionic Zone toward Transition Zone in Hirschsprung's Disease. European Journal of Pediatric Surgery : Official Journal of Austrian Association of Pediatric Surgery ... [Et Al] = Zeitschrift Fur Kinderchirurgie. PMID 33513627 DOI: 10.1055/s-0041-1722859  0.01
2020 Arslan M, Li H, Lee H, Mikula M, Ahn S. Calretinin-Positive Mucosal Innervation (C-mi) as a Potential Biomarker to Predict Fibrosis in Crohn’s Disease (CD): A Pilot Study American Journal of Clinical Pathology. 154: S67-S68. DOI: 10.1093/ajcp/aqaa161.147  0.01
2019 Cordeiro-Rudnisky F, Ahn S, Sheuka N, Whyte C, Boguniewicz A, Fan R, Lin J, Jennings TA, Lee H. Transition Zone in Total Colonic Aganglionosis and Colorectal Hirschsprung's Disease Shows a Similar Trend of Mucosal Innervation: Image Processing and Analysis Study. Pediatric and Developmental Pathology : the Official Journal of the Society For Pediatric Pathology and the Paediatric Pathology Society. 1093526619864225. PMID 31387515 DOI: 10.1177/1093526619864225  0.01
2019 Tsai YJ, Schramm G, Ahn S, Bousse A, Arridge S, Nuyts J, Hutton BF, Stearns CW, Thielemans K. Benefits of Using a Spatially-variant Penalty Strength with Anatomical Priors in PET Reconstruction. Ieee Transactions On Medical Imaging. PMID 31144629 DOI: 10.1109/TMI.2019.2913889  0.01
2018 Tsai YJ, Bousse A, Ehrhardt MJ, Stearns CW, Ahn S, Hutton BF, Arridge S, Thielemans K. Fast Quasi-Newton Algorithms for Penalized Reconstruction in Emission Tomography and Further Improvements via Preconditioning. Ieee Transactions On Medical Imaging. 37: 1000-1010. PMID 29610077 DOI: 10.1109/TMI.2017.2786865  0.01
2018 Wiesinger F, Bylund M, Yang J, Kaushik S, Shanbhag D, Ahn S, Jonsson JH, Lundman JA, Hope T, Nyholm T, Larson P, Cozzini C. Zero TE-based pseudo-CT image conversion in the head and its application in PET/MR attenuation correction and MR-guided radiation therapy planning. Magnetic Resonance in Medicine. PMID 29457287 DOI: 10.1002/mrm.27134  0.01
2018 Ahn S, Cheng L, Shanbhag DD, Qian H, Kaushik SS, Jansen FP, Wiesinger F. Joint estimation of activity and attenuation for PET using pragmatic MR-based prior: application to clinical TOF PET/MR whole-body data for FDG and non-FDG tracers. Physics in Medicine and Biology. PMID 29345242 DOI: 10.1088/1361-6560/aaa8a6  0.01
2018 Najjar S, Ahn S, Kasago I, Zuo C, Umrau K, Ainechi S, Whyte C, Sheehan CE, Homan SM, Lee H. Image Processing and Analysis of Mucosal Calretinin Staining to Define the Transition Zone in Hirschsprung Disease: A Pilot Study. European Journal of Pediatric Surgery : Official Journal of Austrian Association of Pediatric Surgery ... [Et Al] = Zeitschrift Fur Kinderchirurgie. PMID 29304518 DOI: 10.1055/s-0037-1618594  0.04
2018 Umrau K, Ahn S, Najjar S, Sheehan C, Kasago I, Lee H. Utility of Image Processing and Analysis (IPA) for Diagnosis of Very Short Segment Hirschsprung Disease (vsHD) American Journal of Clinical Pathology. 150: S55-S55. DOI: 10.1093/ajcp/aqy090.136  0.01
2018 Najjar S, Ahn S, Umrau K, Sheehan C, Kasago I, Lee H. Diagnostic Utility of Calretinin-Positive Mucosal Nerve Fiber Quantification in Hirschsprung Disease (HD): An Image Processing and Analysis (IPA) Study American Journal of Clinical Pathology. 150: S39-S40. DOI: 10.1093/ajcp/aqy090.097  0.01
2017 Ter Voert EE, Veit-Haibach P, Ahn S, Wiesinger F, Khalighi MM, Levin CS, Iagaru AH, Zaharchuk G, Huellner M, Delso G. Clinical evaluation of TOF versus non-TOF on PET artifacts in simultaneous PET/MR: a dual centre experience. European Journal of Nuclear Medicine and Molecular Imaging. PMID 28124091 DOI: 10.1007/s00259-017-3619-2  0.01
2017 Wangerin KA, Ahn S, Wollenweber S, Ross SG, Kinahan PE, Manjeshwar RM. Evaluation of lesion detectability in positron emission tomography when using a convergent penalized likelihood image reconstruction method. Journal of Medical Imaging (Bellingham, Wash.). 4: 011002. PMID 27921073 DOI: 10.1117/1.JMI.4.1.011002  0.01
2015 Ahn S, Ross SG, Asma E, Miao J, Jin X, Cheng L, Wollenweber SD, Manjeshwar RM. Quantitative comparison of OSEM and penalized likelihood image reconstruction using relative difference penalties for clinical PET. Physics in Medicine and Biology. 60: 5733-51. PMID 26158503 DOI: 10.1088/0031-9155/60/15/5733  0.01
2015 Wiesinger F, Sacolick LI, Menini A, Kaushik SS, Ahn S, Veit-Haibach P, Delso G, Shanbhag DD. Zero TE MR bone imaging in the head. Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine. PMID 25639956 DOI: 10.1002/mrm.25545  0.01
2015 Ahn S, Ross SG, Asma E, Miao J, Jin X, Cheng L, Wollenweber SD, Manjeshwar RM. Quantitative comparison of OSEM and penalized likelihood image reconstruction using relative difference penalties for clinical PET Physics in Medicine and Biology. 60: 5733-5751. DOI: 10.1088/0031-9155/60/15/5733  0.04
2013 Dutta J, Ahn S, Li Q. Quantitative statistical methods for image quality assessment. Theranostics. 3: 741-56. PMID 24312148 DOI: 10.7150/thno.6815  0.12
2013 Cheng L, Asma E, Ahn S, Manjeshwar RM. Comparison of numerical convergence speeds of convergent and accelerated algorithms for penalized likelihood PET image Ieee Nuclear Science Symposium Conference Record. DOI: 10.1109/NSSMIC.2013.6829244  0.12
2013 Ahn S, Asma E, Ross SG, Manjeshwar RM. Partial volume correction for penalized-likelihood image reconstruction in oncological PET applications Ieee Nuclear Science Symposium Conference Record. DOI: 10.1109/NSSMIC.2013.6829071  0.12
2013 Ahn S, Asma E, Ross SG, Manjeshwar RM. Power laws for image quality measures in PET penalized-likelihood image reconstruction Ieee Nuclear Science Symposium Conference Record. DOI: 10.1109/NSSMIC.2013.6829034  0.12
2012 Dutta J, Ahn S, Li C, Cherry SR, Leahy RM. Joint L1 and total variation regularization for fluorescence molecular tomography. Physics in Medicine and Biology. 57: 1459-76. PMID 22390906 DOI: 10.1088/0031-9155/57/6/1459  0.12
2012 Asma E, Ahn S, Ross SG, Chen A, Manjeshwar RM. Accurate and consistent lesion quantitation with clinically acceptable penalized likelihood images Ieee Nuclear Science Symposium Conference Record. 4062-4066. DOI: 10.1109/NSSMIC.2012.6551928  0.12
2012 Ahn S, Asma E, Thielemans K, Deller TW, Ross SG, Stearns CW. Trade-off between contrast recovery, image noise and edge artifacts in PET image reconstruction using detector blurring models Ieee Nuclear Science Symposium Conference Record. 4110-4114. DOI: 10.1109/NSSMIC.2011.6153783  0.12
2012 Asma E, Ahn S, Manjeshwar RM. Object size dependency of noise strength and correlation patterns for TOF and non-TOF PET Ieee Nuclear Science Symposium Conference Record. 3812-3815. DOI: 10.1109/NSSMIC.2011.6153723  0.12
2011 Wang RT, Ahn S, Park CC, Khan AH, Lange K, Smith DJ. Effects of genome-wide copy number variation on expression in mammalian cells. Bmc Genomics. 12: 562. PMID 22085887 DOI: 10.1186/1471-2164-12-562  0.12
2011 Ahn S, Cho S, Li Q, Lin Y, Leahy RM. Optimal rebinning of time-of-flight PET data. Ieee Transactions On Medical Imaging. 30: 1808-18. PMID 21536530 DOI: 10.1109/TMI.2011.2149537  0.12
2010 Ranola JM, Ahn S, Sehl M, Smith DJ, Lange K. A Poisson model for random multigraphs. Bioinformatics (Oxford, England). 26: 2004-11. PMID 20554690 DOI: 10.1093/bioinformatics/btq309  0.12
2010 Lin A, Wang RT, Ahn S, Park CC, Smith DJ. A genome-wide map of human genetic interactions inferred from radiation hybrid genotypes. Genome Research. 20: 1122-32. PMID 20508145 DOI: 10.1101/gr.104216.109  0.12
2010 Dutta J, Ahn S, Joshi AA, Leahy RM. Illumination pattern optimization for fluorescence tomography: theory and simulation studies. Physics in Medicine and Biology. 55: 2961-82. PMID 20436232 DOI: 10.1088/0031-9155/55/10/011  0.12
2010 Ren R, Li Q, Ahn S, Cho S, Leahy RM. Estimation of gap data using bow-tie filters for 3D time-of-flight PET Ieee Nuclear Science Symposium Conference Record. 2691-2694. DOI: 10.1109/NSSMIC.2010.5874279  0.12
2009 Dutta J, Ahn S, Joshi AA, Leahy RM. Optimal Illumination Patterns for Fluorescence Tomography. Proceedings / Ieee International Symposium On Biomedical Imaging: From Nano to Macro. Ieee International Symposium On Biomedical Imaging. 2009: 1275-1278. PMID 20711365 DOI: 10.1109/ISBI.2009.5193295  0.12
2009 Chaudhari AJ, Ahn S, Levenson R, Badawi RD, Cherry SR, Leahy RM. Excitation spectroscopy in multispectral optical fluorescence tomography: methodology, feasibility and computer simulation studies. Physics in Medicine and Biology. 54: 4687-704. PMID 19590118 DOI: 10.1088/0031-9155/54/15/004  0.12
2009 Ahn S, Wang RT, Park CC, Lin A, Leahy RM, Lange K, Smith DJ. Directed mammalian gene regulatory networks using expression and comparative genomic hybridization microarray data from radiation hybrids. Plos Computational Biology. 5: e1000407. PMID 19521529 DOI: 10.1371/journal.pcbi.1000407  0.12
2009 Li C, Mitchell GS, Dutta J, Ahn S, Leahy RM, Cherry SR. A three-dimensional multispectral fluorescence optical tomography imaging system for small animals based on a conical mirror design. Optics Express. 17: 7571-85. PMID 19399136 DOI: 10.1364/OE.17.007571  0.12
2009 Cho S, Ahn S, Li Q, Leahy RM. Exact and approximate Fourier rebinning of PET data from time-of-flight to non time-of-flight. Physics in Medicine and Biology. 54: 467-84. PMID 19124956 DOI: 10.1088/0031-9155/54/3/001  0.12
2009 Ahn S, Cho S, Li Q, Leahy RM. Optimized weighting for fourier rebinning of three-dimensional time-of-flight PET data to non-time-of-flight Ieee Nuclear Science Symposium Conference Record. 2989-2996. DOI: 10.1109/NSSMIC.2009.5401593  0.12
2008 Ahn S, Chaudhari AJ, Darvas F, Bouman CA, Leahy RM. Fast iterative image reconstruction methods for fully 3D multispectral bioluminescence tomography. Physics in Medicine and Biology. 53: 3921-42. PMID 18591735 DOI: 10.1088/0031-9155/53/14/013  0.12
2008 Cho S, Ahn S, Li Q, Leahy RM. Analytical properties of time-of-flight PET data. Physics in Medicine and Biology. 53: 2809-21. PMID 18460746 DOI: 10.1088/0031-9155/53/11/004  0.12
2008 Park CC, Ahn S, Bloom JS, Lin A, Wang RT, Wu T, Sekar A, Khan AH, Farr CJ, Lusis AJ, Leahy RM, Lange K, Smith DJ. Fine mapping of regulatory loci for mammalian gene expression using radiation hybrids. Nature Genetics. 40: 421-9. PMID 18362883 DOI: 10.1038/ng.113  0.12
2008 Ahn S, Leahy RM. Analysis of Resolution and Noise Properties of Nonquadratically Regularized Image Reconstruction Methods for PET. Ieee Transactions On Medical Imaging. 27: 413-24. PMID 18334436 DOI: 10.1109/TMI.2007.911549  0.12
2008 Dutta J, Ahn S, Li C, Chaudhari AJ, Cherry SR, Leahy RM. Computationally efficient perturbative forward modeling for 3D multispectral bioluminescence and fluorescence tomography Progress in Biomedical Optics and Imaging - Proceedings of Spie. 6913. DOI: 10.1117/12.770755  0.12
2008 Park CC, Ahn S, Bloom JS, Lin A, Wang RT, Wu T, Sekar A, Khan AH, Farr CJ, Lusis AJ, Leahy RM, Lange K, Smith DJ. Erratum: Fine mapping of regulatory loci for mammalian gene expression using radiation hybrids Nature Genetics. 40: 682-682. DOI: 10.1038/ng0508-682  0.01
2007 Cho S, Li Q, Ahn S, Bai B, Leahy RM. Iterative image reconstruction using inverse Fourier rebinning for fully 3-D PET. Ieee Transactions On Medical Imaging. 26: 745-56. PMID 17518067 DOI: 10.1109/TMI.2006.887378  0.12
2007 Cho S, Li Q, Ahn S, Bai B, Leahy RM. Iterative image reconstruction using inverse fourier rebinning for fully 3-D PET. Ieee Transactions On Medical Imaging. 26: 347-58. PMID 17354640  0.08
2007 Li Q, Asma E, Ahn S, Leahy RM. A fast fully 4-D incremental gradient reconstruction algorithm for list mode PET data. Ieee Transactions On Medical Imaging. 26: 58-67. PMID 17243584 DOI: 10.1109/TMI.2006.884208  0.12
2007 Ahn S, Leahy RM. Analysis of region of interest quantification for PET image reconstruction with selective regularization Ieee Nuclear Science Symposium Conference Record. 3: 1781-1786. DOI: 10.1109/NSSMIC.2006.354240  0.12
2007 Ahn S, Chaudhari AJ, Darvas F, Bouman CA, Leahy RM. Fast image reconstruction methods for fully 3D multispectral optical bioluminescence tomography 2007 4th Ieee International Symposium On Biomedical Imaging: From Nano to Macro - Proceedings. 229-232. DOI: 10.1109/ISBI.2007.356830  0.12
2006 Ahn S, Fessler JA, Blatt D, Hero AO. Convergent incremental optimization transfer algorithms: application to tomography. Ieee Transactions On Medical Imaging. 25: 283-96. PMID 16524085 DOI: 10.1109/TMI.2005.862740  0.01
2005 Sanghee C, Quanzheng L, Ahn S, Leahy RM. Fast projectors for iterative 3D PET reconstruction Ieee Nuclear Science Symposium Conference Record. 4: 1933-1937. DOI: 10.1109/NSSMIC.2005.1596710  0.12
2004 Ahn S, Fessler JA. Emission image reconstruction for randoms-precorrected PET allowing negative sinogram values. Ieee Transactions On Medical Imaging. 23: 591-601. PMID 15147012 DOI: 10.1109/TMI.2004.826046  0.12
2004 Ahn S, Fessler JA, Nichols TE, Koeppe RA. Covariance of kinetic parameter estimators based on time activity curve reconstructions: Preliminary study on 1D dynamic imaging 2004 2nd Ieee International Symposium On Biomedical Imaging: Macro to Nano. 1: 368-371.  0.12
2003 Ahn S, Fessler JA. Globally convergent image reconstruction for emission tomography using relaxed ordered subsets algorithms. Ieee Transactions On Medical Imaging. 22: 613-26. PMID 12846430 DOI: 10.1109/TMI.2003.812251  0.12
2001 Ahn S, Fessler JA. Globally convergent ordered subsets algorithms: Application to tomography Ieee Nuclear Science Symposium and Medical Imaging Conference. 2: 1064-1068.  0.12
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