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Classifying EEG and ECoG Signals without Subject Training for Fast BCI Implementation: Comparison of Non-Paralysed and Completely Paralysed Subjects

By N. Jeremy Hill, Thomas Navin Lal, Michael Schröder, Thilo Hinterberger, Barbara Wilhelm, Femke Nijboer, Ursula Mochty, Guido Widman, Christian Elger, Bernhard Schölkopf, Andrea Kübler and Niels Birbaumer


We summarize results from a series of related studies that aim to develop a motor-imagery-based brain-computer interface using a single recording session of EEG or ECoG signals for each subject. We apply the same experimental and analytical methods to 11 non-paralysed subjects (8 EEG, 3 ECoG), and to 5 paralysed subjects (4 EEG, 1 ECoG) who had been unable to communicate for some time. While it was relatively easy to obtain classifiable signals quickly from most of the non-paralysed subjects, it proved impossible to classify the signals obtained from the paralysed patients by the same methods. This highlights the fact that though certain BCI paradigms may work well with healthy subjects, this does not necessarily indicate success with the target user group. We outline possible reasons for this failure to transfer

Publisher: MIT University Press
Year: 2006
OAI identifier: oai:CiteSeerX.psu:
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