Evaluation of signal space separation via simulation

Medical & Biological Engineering & Computing
Tao SongMingxiong Huang

Abstract

Signal space separation (SSS) method is an advanced signal-processing approach that can be used to recover bio-magnetic signal and remove external disturbance in empirical magnetoencephalography (MEG) measurements. SSS is based on the solution of the quasi-static approximation of Maxwell equations (i.e., Laplace's equation) which can be expressed as linear combinations of spherical harmonic functions. In applying SSS, MEG measurements can be split into two parts: brain signals and external interferences. In this paper, after a brief review of the basics of SSS, we evaluate SSS systematically via computer simulation and real MEG data. In the simulations of this paper, two types of interference sources with magnetic and electric current dipoles are used. The interference suppression effects and the quality of the reconstruction of the interested signal are investigated. Also, the degree of spherical harmonic functions and its relationship with signal reconstruction and interference suppression are studied thoroughly. Finally, we provide objective assessments of the advantages and limitations of the SSS approach, and its practical value in MEG measurements.

References

Sep 1, 1995·Electroencephalography and Clinical Neurophysiology·C D TescheO Salonen
Sep 1, 1993·IEEE Transactions on Bio-medical Engineering·A I AhonenV A Vilkman
Mar 1, 1997·Medical & Biological Engineering & Computing·M A Uusitalo, R J Ilmoniemi
Oct 6, 1997·Proceedings of the National Academy of Sciences of the United States of America·S MakeigT J Sejnowski
Jan 26, 2002·Science·S MakeigT J Sejnowski
Jan 28, 2004·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Elina PihkoYoshio Okada
Sep 24, 2004·Brain Topography·Samu TauluJuha Simola
Oct 23, 2004·Experimental Neurology·Marie CheourPatricia Kuhl
Dec 25, 2004·Neuroreport·Minna HuotilainenRisto Näätänen
Sep 7, 2006·Neurosurgery·Jyrki P MäkeläRitva Paetau

❮ Previous
Next ❯

Citations

Dec 3, 2009·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Tao SongMingxiong Huang
Jul 5, 2013·PloS One·David HeisterMingxiong Huang
Apr 14, 2016·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Charles W HuangRoland R Lee
Jun 17, 2009·IEEE Transactions on Bio-medical Engineering·Tolga Esat OzkurtRobert J Sclabassi
Feb 24, 2010·IEEE Transactions on Bio-medical Engineering·Chenlei GuoDouglas J Weber
Jul 21, 2010·NeuroImage·Mithun DiwakarRoland R Lee
Aug 16, 2016·Computational Intelligence and Neuroscience·Niels Trusbak HaumannElvira Brattico
Sep 19, 2014·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Chunyan CaoBomin Sun

❮ Previous
Next ❯

Related Concepts

Related Feeds

Anxiety Disorders

Discover the latest research on anxiety disorders including agoraphobia, panic disorder, obsessive-compulsive disorder, and post-traumatic stress disorder here.