The spatial filtering of electroencephalogram data is crucial when analyzing the brain activity. Spatial filters increase the signal-to-noise ratio, thus allowing better classification of the analyzed mental states. This study will show the evolution in the selection of the most appropriate spatial filter when subjects are training to control a brain-computer interface. Different filters the common average reference and the estimation of the surface Laplacian both using finite different methods and spherical splines- have been adapted and evaluated for a particular configuration of electrodes, using only eight positions: F-3, C-3, P-3, C-z, P-z, F-4, C-4, and P-4.
Spatial filtering in the training process of a brain computer interface / J., Mourino; J. D. R., Millan; Cincotti, Febo; S., Chiappa; R., Jane; Babiloni, Fabio. - 23:(2001), pp. 639-642. (Intervento presentato al convegno 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society tenutosi a ISTANBUL, TURKEY nel OCT 25-28, 2001).
Spatial filtering in the training process of a brain computer interface
CINCOTTI, FEBO;BABILONI, Fabio
2001
Abstract
The spatial filtering of electroencephalogram data is crucial when analyzing the brain activity. Spatial filters increase the signal-to-noise ratio, thus allowing better classification of the analyzed mental states. This study will show the evolution in the selection of the most appropriate spatial filter when subjects are training to control a brain-computer interface. Different filters the common average reference and the estimation of the surface Laplacian both using finite different methods and spherical splines- have been adapted and evaluated for a particular configuration of electrodes, using only eight positions: F-3, C-3, P-3, C-z, P-z, F-4, C-4, and P-4.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.