PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

Localization of class-related mu-rhythm desynchronization in motor imagery based Brain-Computer Interface sessions
Stefan Haufe, Ryota Tomioka, Thorsten Dickhaus, Claudia Sannelli, Benjamin Blankertz, Guido Nolte and Klaus-Robert Müller
In: EMBC 2010, 31 Aug - 4 Sep 2010, Buenos Aires.


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.

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EPrint Type:Conference or Workshop Item (Paper)
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Brain Computer Interfaces
ID Code:7838
Deposited By:Stefan Haufe
Deposited On:17 March 2011