PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

Brain-computer communication with slow cortical potentials: Methodology and critical aspects.
Thilo Hinterberger, Stefan Schmidt, Nicola Neumann, Jürgen Mellinger, Benjamin Blankertz, Gabriel Curio and Niels Birbaumer
EEE Trans. Biomed. Eng. Volume 51, Number 6, pp. 1011-1018, 2004. ISSN 0018-9294


A Thought-Translation-Device (TTD) has been designed to enable direct brain-computer communication using self regulation of slow cortical potentials (SCPs). However, accuracy of SCP control reveals high inter-subject variability. To guarantee the highest possible communication speed, some important aspects of training SCPs are discussed. A baseline correction of SCPs can increase performance. Multi-channel recordings show that SCPs are of highest amplitude around the vertex electrode used for feedback but in some subjects more global distributions were observed. A new method for control of eye movement are presented. Sequential effects of trial-to-trial interaction may also cause difficulties to the user. Finally, psychophysiological factors determining SCP-communication are discussed.

EPrint Type:Article
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Brain Computer Interfaces
ID Code:693
Deposited By:Benjamin Blankertz
Deposited On:29 December 2004