title: Localization of class-related mu-rhythm desynchronization in motor imagery based brain-computer interface sessions.
abstract: 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.
authors.affiliation: Berlin Institute of Technology, Franklinstr. 28/29, D-10587, Germany. haufe@cs.tu-berlin.de
authors.forename: Stefan
authors.initials: S
authors.lastname: Haufe
authors.forename: Ryota
authors.initials: R
authors.lastname: Tomioka
authors.forename: Thorsten
authors.initials: T
authors.lastname: Dickhaus
authors.forename: Claudia
authors.initials: C
authors.lastname: Sannelli
authors.forename: Benjamin
authors.initials: B
authors.lastname: Blankertz
authors.forename: Guido
authors.initials: G
authors.lastname: Nolte
authors.forename: Klaus-Robert
authors.initials: KR
authors.lastname: Muller
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology*; D058407:Electroencephalography Phase Synchronization / Q000502:physiology*; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D007092:Imagination / Q000502:physiology*; D008297:Male; D009068:Movement / Q000502:physiology*; D014584:User-Computer Interface