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Computational Intelligence and Neuroscience
Volume 2007 (2007), Article ID 54925, 12 pages
http://dx.doi.org/10.1155/2007/54925
Research Article

High-Resolution Movement EEG Classification

Biosignal Laboratory, Department of Circuit Theory, Faculty of Electrotechnical Engineering, Czech Technical University in Prague, Technická 2, Prague 16627, Czech Republic

Received 17 February 2007; Accepted 23 September 2007

Academic Editor: Andrzej Cichocki

Copyright © 2007 Jakub Štastný and Pavel Sovka. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The aim of the contribution is to analyze possibilities of high-resolution movement classification using human EEG. For this purpose, a database of the EEG recorded during right-thumb and little-finger fast flexion movements of the experimental subjects was created. The statistical analysis of the EEG was done on the subject's basis instead of the commonly used grand averaging. Statistically significant differences between the EEG accompanying movements of both fingers were found, extending the results of other so far published works. The classifier based on hidden Markov models was able to distinguish between movement and resting states (classification score of 94–100%), but it was unable to recognize the type of the movement. This is caused by the large fraction of other (nonmovement related) EEG activities in the recorded signals. A classification method based on advanced EEG signal denoising is being currently developed to overcome this problem.