Conference/Seminar Presentations
PDF files of power point presentations are available for the following presentations. The original power point files are also available upon request. (Mathtype must be installed to correctly display these ppt files.)
MEG source-space connectivity analysis
K.Sekihara
Conference on Systems Neuroscience and Rehabilitation: SNR2014, Saitama,
Japan, March 2014
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Difficulties and pitfalls in source-space connectivity analysis
K. Sekihara
International Conference on Basic and Clinical Multimodal Imaging:BaCi2014,
Geneva, Switzerland, September, 2013.
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A novel resolution concept for biomagnetic imaging,
K.Sekihara,
IEEE Engineering in Medicine & Biology Conference,
Osaka, Japan, July, 2013
Removal of spurious coherence in MEG source-space coherence analysis,
K.Sekihara,
18th International Conference on Biomagnetism
Paris, France, 26-30, August 2012
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Estimation and Visualization of Brain Networks Using MEG Source Imaging
K Sekihara
Asia-Pacific Signal and Information Processing Association Annual Summit
and
Conference 2011 (APSIPA ASC 2011)
Xian, China, 18-21 October 2011
Functional Source Imaging of Spinal Cord Activity from Its Evoked Magnetic
Field
K Sekihara
8th International Symposium on Noninvasive Functional Source Imaging of
the Brain and Heart & 8th International Conference on Bioelectromagnetism
Banff, Canada, 13-16 May 2011
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Estimating Functional Connectivity in MEG Source Imaging
K Sekihara
7th International Symposium on Noninvasive Functional Source Imaging of
the Brain and Heart & 7th International Conference on Bioelectromagnetism
Rome, Italy, 29-31 May 2009
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Adaptive Spatial Filter and Adaptive Inverse Modeling
K. Sekihara
MEG Analysis Workshop, New York University Symposium, New York, January 2009
Principles of adaptive spatial filters
K. Sekihara
International Summer School in Biomedical Engineering“Reconstruction of Sources of Electrophysiological Signals” Weimar, Germany, September, 2008
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Adaptive inverse modeling: current status of research and future directions (plenary lecture)
K. Sekihara
International Conference on Biomagnetism 2008, Sapporo, Japan, August, 2008
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Adaptive spatial filter and adaptive inverse modeling for bioelectromagnetic source imaging (keynote lecture)
K. Sekihara
The Joint Meeting of the 6th International Symposium on Noninvasive Functional
Source Imaging of the Brain and Heart & the International Conference
on Functional Biomedical Imaging October, 2007, Hangzhou , China
Adaptive spatial filter technique: its application to MEG/EEG functional source imaging
K. Sekihara, and S. S. Nagarajan
World Congress on Medical Physics and Biomedical Engineering 2006, Seoul, Korea, August, 2006
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A novel adaptive beamformers for MEG source reconstruction effective when large background brain activities exist
K. Sekihara, H. Attias, K. E. Hild II, J. M. Zumer, S. S. Dalal, and S. S. Nagarajan
15th International Conference on Biomagnetism, Vancouver, Canada, August, 20, 2006
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Prewhitening Signal Covariance Estimation and Prewhitening Beamforming
K. Sekihara, K. E. Hild, S. S. Nagarajan
Recent Advances in Biomagnetic Signal Processing and Source Localization Satellite Symposium for 15th International Conference on Biomagnetism
Vancouver, Canada, August, 20, 2006
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Influence of low/high-rank interferences on adaptive beamformer source reconstruction
K. Sekihara K. E. Hild, H. T. Attias, S. S. Nagarajan
The Joint Meeting of 5th International Conference on Bioelectromagnetism
and 5th International Symposium on Noninvasive Functional Source Imaging
within the Human Brain and Heart (BEM&NFSI), Minneapolis, Minnesota,
May, 2005
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Comparison between adaptive and non-adaptive spatial-filter performances
K. Sekihara M. Sahani, S. S. Nagarajan
"Spatial filtering in Biomagnetism", Satellite Symposium at Biomag 2004, Cambridge, Massachusetts, August, 2004
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An overview of beamformer approaches: Basic principles, underlying assumptions, and major causes of errors
K. Sekihara
14th International Conference on Biomagnetism, Boston, Massachusetts, August, 2004.
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Adaptive beamformer source reconstruction: our recent developments toward spatio-tempotal reconstruction of brain activities
K. Sekihara and S. S. Nagarajan
14th Conference of the International Society for Brain Electromagnetic Topography, Santa Fe, USA, November, 2003
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Neuromagnetic source reconstruction and inverse modeling: Application of adaptive spatial filter techniques
K. Sekihara
IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003, Keihanna, Japan, October, 2003.
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Neuromagnetic source reconstruction and inverse modeling, Part I: Introduction to adaptive spatial filter techniques
K. Sekihara
MIND AND BRAIN III: Audition, Language, Communication, Dubrovnik, Croatia, April, 2003
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Neuromagnetic source reconstruction and inverse modeling, Part II: Performance analysis of adaptive beamformer techniques
K. Sekihara
MIND AND BRAIN III: Audition, Language, Communication, Dubrovnik, Croatia, April, 2003
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Advantages and problems with covariance-based source-reconstruction methods: with an emphasis on their behaviour towards noise
K. Sekihara
in Workshop "statistical issues in the MEG/EEG inverse problem", 13th International Conference on Biomagnetism, Jena, Germany, August, 2002.
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Activation of human cerebellum by median nerve stimulation
K. Sekihara, T. Kimura, I. Hashimoto
13th International Conference on Biomagnetism, Jena, Germany, August, 2002.
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MEG adaptive-beamformer source reconstruction technique in the presence of correlated sources
K. Sekihara
Third International Symposium on noninvasive functional source imaging within the human brain and heart, Innsbuck, Austria, September, 2001.
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Recent advances in the analysis of biomagnetic signals
K. Sekihara
The keynote lecture in the 12th International Conference on Biomagnetism, Helsinki, Finland, August, 2000.
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Conference Proceedings
Effectiveness of sparse Bayesian algorithm for MVAR coefficient estimation
in MEG/EEG source-space causality analysis
K. Sekihara, H. Attias, J. P. Owen, D. Wipf and S. S. Nagarajan
8th International Symposium on Noninvasive Functional Source Imaging of
the Brain and Heart & 8th International Conference on Bioelectromagnetism,
Banff, Canada, 13-16 May 2011
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Estimating causality measures among cortical source activities when large background interference exists
K.Sekihara, J.Owen, H.Attias, S.S.Nagarajan,
17th International Conference on Biomagnetism, Dobrovnik, Croatia, April,2010.
Estimating directions of information flow between cortical activities using phase-slope index
K.Sekihara, J.Owen, H.Attias, D.Wipf, S.S.Nagarajan,
17th International Conference on Biomagnetism, Dobrovnik, Croatia, April, 2010.
Robust Estimates of Functional Connectivity with MEG Data
J.Owen, H.Attias, D.Wipf, K.Sekihara, S.S.Nagarajan,
17th International Conference on Biomagnetism, Dobrovnik,Croatia, April, 2010.
Recursive minimum-leakage (REML) spatial filter for MCG source imaging
I. Kumihashi, K. Ogata, A. Kandori, B. Tilg, B. Pfeifer, M. Seger, K. Sekihara
Proceedings of 7th International Symposium on Noninvasive Functional Source
Imaging of the Brain and Heart & 7th International Conference on Bioelectromagnetism
Rome, Italy, 29-31 May 2009
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Robust Methods for Reconstructing Brain Activity and Functional Connectivity from MEG Data
J. P. Owen, D. P. Wipf, H. T. Attias, K. Sekihara, S. S. Nagarajan
Proceedings of 7th International Symposium on Noninvasive Functional Source
Imaging of the Brain and Heart & 7th International Conference on Bioelectromagnetism
Rome, Italy, 29-31 May 2009
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Functional source imaging of human spinal cord electrical activity from its evoked magnetic field
T. Sato, Y. Adachi, M. Tomori, K. Sakaki, Senichi Ishii, S. Kawabata and K. Sekihara
Proceedings of 7th International Symposium on Noninvasive Functional Source
Imaging of the Brain and Heart & 7th International Conference on Bioelectromagnetism
Rome, Italy, 29-31 May 2009
PDF for poster presentation
Spatial localization of cortical time-frequency dynamics.
Dalal SS, Guggisberg AG, Edwards E, Sekihara K, Findlay AM, Canolty RT, Knight RT, Barbaro NM, Kirsch HE, Nagarajan SS.
Conf Proc IEEE Eng Med Biol Soc. 2007;2007:4941-4.
EM Algorithms generating MCE and FOCUSS
Wipf D, Sekihara K, and Nagarajan S
The 6th International Symposium on Noninvasive Functional Source Imaging within the Human Brain and Heart Hangzhou, China,October, 2007
Adaptive Spatial filter and Adaptive Inverse Modeling for Electromagnetic Source Imaging
Sekihara K.
The 6th International Symposium on Noninvasive Functional Source Imaging within the Human Brain and Heart Hangzhou, China October, 2007
Partitioned Factor Analysis for Interference Suppression and Source Extraction
S. S. Nagarajan, H. T. Attias, K. Sekihara, and K. E. Hild II
Proceedings ofIntl. Workshop on IndependentComponent Analysis and Signal Separation (ICA '06), Charleston, SouthCarolina, Mar. 2006, Springer-Verlag, Berlin, pp. 189-197,
Stimulus Evoked Independent Factor Analysis of MEG Data
S. S. Nagarajan, H. T. Attias, K. E. Hild II, and K. Sekihara
Advances in Neural Information Processing Systems 18, NIPS 2005, December 5-8, 2005, Vancouver, British Columbia, Canada
Influence of High-Rank Background Interference on Adaptive Beamformer Source Reconstruction
K. Sekihara K. E. Hild II, and S. S. Nagarajan
The Joint Meeting of 5th International Conference on Bioelectromagnetism
and 5th International Symposium on Noninvasive Functional Source Imaging
within the Human Brain and Heart (BEM&NFSI), Minneapolis, Minnesota,
May, 2005, Pages:1-4
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A Graphical Model for Estimating Stimulus-Evoked Brain Responses in Noisy MEG Data with Large Background Brain Activity
S. S. Nagarajan, H. T. Attias, K. E. Hild II, and K. Sekihara
The Joint Meeting of 5th International Conference on Bioelectromagnetism
and 5th International Symposium on Noninvasive Functional Source Imaging
within the Human Brain and Heart (BEM&NFSI), Minneapolis, Minnesota,
May, 2005, Pages:34-37
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Separation of Phase-Locked and Non-Phase-Locked Activities Using Empirical Null-Distributions Obtained from Randomized Plus/Minus Averagings of Event-Related Epochs
K. Sekihara and S. S. Nagarajan
The Joint Meeting of 5th International Conference on Bioelectromagnetism
and 5th International Symposium on Noninvasive Functional Source Imaging
within the Human Brain and Heart (BEM&NFSI), Minneapolis, Minnesota,
May, 2005, Pages:54-57
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Bootstrap-based statistical thresholding for MEG source reconstruction images
Sekihara, K.; Sahani, M.,; Nagarajan, S.S.
Annual International Conference of the IEEE Engineering in Medicine and Biology Society --Proceedings 26 II, 2004 Page(s): 1018 -1021
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A simple non-parametric statistical thresholding for MEG spatial-filter source reconstruction images
K. Sekihara, M. Sahani, S. S. Nagarajan
Proceedings of 14th International Conference on Biomagnetism, Pages:595-596, Boston, Massachusetts, August, 2004.
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Performance of an MEG adaptive-beamformer tecrnique in the presence of correlated neural activities: correlation-coefficient estimation and time-course retrieval
Sekihara, K.; Nagarajan, S.S.; Poeppell, D.; Marantz, A.;
Biomedical Imaging, 2002. Proceedings. 2002 IEEE International Symposium on , 2002 Page(s): 1019 -1022
Reconstructing spatio-temporal activities of neural sources from magnetoencephalographic data using a vector beamformer
Sekihara, K.; Nagarajan, S.; Poeppel, D.; Miyashita, Y.;
Acoustics, Speech, and Signal Processing, 2001. Proceedings. 2001 IEEE International Conference on , Volume: 3 , 2001 Page(s): 2021 -2024 vol.3
Estimating neural sources from each time-frequency component of magnetoencephalographic data
Sekihara, K.; Nagarajan, S.; Poeppel, D.; Miyashita, Y.;
Time-Frequency and Time-Scale Analysis, 1998. Proceedings of the IEEE-SP International Symposium on , 6-9 Oct 1998 Page(s): 69 -72
Generalized Wiener estimation of three-dimensional current distribution from biomagnetic measurements
K. Sekihara and B. Scholz
Biomag 96: Proceedings of the Tenth International Conference on Biomagnetism, C. J. Aine eds. Feb. 1996, Page(s): 338-341, Springer-Verlag, New York.
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