NDLI: Matching Pursuit and Source Deflation for Sparse EEG/MEG Dipole Moment Estimation

Content Provider	IEEE Xplore Digital Library
Author	Shun Chi Wu Swindlehurst, A.L.
Copyright Year	1964
Abstract	In this paper, we propose novel matching pursuit (MP)-based algorithms for EEG/MEG dipole source localization and parameter estimation for multiple measurement vectors with constant sparsity. The algorithms combine the ideas of MP for sparse signal recovery and source deflation, as employed in estimation via alternating projections. The source-deflated matching pursuit (SDMP) approach mitigates the problem of residual interference inherent in sequential MP-based methods or recursively applied (RAP)-MUSIC. Furthermore, unlike prior methods based on alternating projection, SDMP allows one to efficiently estimate the dipole orientation in addition to its location. Simulations show that the proposed algorithms outperform existing techniques under various conditions, including those with highly correlated sources. Results using real EEG data from auditory experiments are also presented to illustrate the performance of these algorithms.
Sponsorship	IEEE Engineering in Medicine and Biology Society
Page Count	9
File Size	1021714
Starting Page	2280
Ending Page	2288
File Format	PDF
ISSN	00189294
Volume Number	60
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Matching pursuit algorithms Brain models Vectors Electroencephalography Indexes sparse representations Alternating projection deflation dipole source localization electroencephalography (EEG) matching pursuit (MP) magnetoencephalography (MEG)
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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