Localization of class-related mu-rhythm desynchronization in motor imagery based Brain-Computer Interface sessions

被引：4
|
作者：
Haufe, Stefan [1 ]
Tomioka, Ryota [3 ]
Dickhaus, Thorsten [1 ]
Sannelli, Claudia [1 ]
Blankertz, Benjamin [1 ]
Nolte, Guido [2 ]
Mueller, Klaus-Robert [1 ]
机构：
[1] Berlin Inst Technol, Franklinstr 28-29, D-10587 Berlin, Germany
[2] Fraunhofer Inst FIRST, D-12489 Berlin, Germany
[3] Univ Tokyo, Tokyo 1138654, Japan
来源：
2010 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC) | 2010年
关键词：
RECONSTRUCTION; PERFORMANCE;
D O I：
10.1109/IEMBS.2010.5626177
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
We localize the sources of class-dependent event-related desynchronisation (ERD) of the mu-rhythm related to different types of motor imagery in Brain-Computer Interfacing (BCI) sessions. Our approach is based on localization of single-trial Fourier coefficients using sparse basis field expansions (S-FLEX). The analysis reveals focal sources in the sensorimotor cortices, a finding which can be regarded as a proof for the expected neurophysiological origin of the BCI control signal. As a technical contribution, we extend S-FLEX to the multiple measurement case in a way that the activity of different frequency bins within the mu-band is coherently localized.
引用
收藏
页码：5137 / 5140
页数：4
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