Dandan Huang et al 2009 J. Neural Eng. 6 046005 doi:10.1088/1741-2560/6/4/046005
Dandan Huang1, Peter Lin2, Ding-Yu Fei1, Xuedong Chen3 and Ou Bai1,4
Show affiliationsThis study aims to explore whether human intentions to move or cease to move right and left hands can be decoded from spatiotemporal features in non-invasive EEG in order to control a discrete two-dimensional cursor movement for a potential multidimensional brain–computer interface (BCI). Five naïve subjects performed either sustaining or stopping a motor task with time locking to a predefined time window by using motor execution with physical movement or motor imagery. Spatial filtering, temporal filtering, feature selection and classification methods were explored. The performance of the proposed BCI was evaluated by both offline classification and online two-dimensional cursor control. Event-related desynchronization (ERD) and post-movement event-related synchronization (ERS) were observed on the contralateral hemisphere to the hand moved for both motor execution and motor imagery. Feature analysis showed that EEG beta band activity in the contralateral hemisphere over the motor cortex provided the best detection of either sustained or ceased movement of the right or left hand. The offline classification of four motor tasks (sustain or cease to move right or left hand) provided 10-fold cross-validation accuracy as high as 88% for motor execution and 73% for motor imagery. The subjects participating in experiments with physical movement were able to complete the online game with motor execution at an average accuracy of 85.5 ± 4.65%; the subjects participating in motor imagery study also completed the game successfully. The proposed BCI provides a new practical multidimensional method by noninvasive EEG signal associated with human natural behavior, which does not need long-term training.
87.85.Ng Biological signal processing
07.05.Mh Neural networks, fuzzy logic, artificial intelligence
87.19.R- Mechanical and electrical properties of tissues and organs
Issue 4 (August 2009)
Received 16 March 2009, accepted for publication 1 June 2009
Published 25 June 2009
Dandan Huang et al 2009 J. Neural Eng. 6 046005
J. Colin et al 2007 EPL 78 16002
B G Sherstyukov et al 2007 Environ. Res. Lett. 2 045010
X Garbet et al 2004 Plasma Phys. Control. Fusion 46 B557
M. D. Caballero-García et al. 2009 ApJ 692 1339
Saburo Takahashi and Sadamichi Maekawa 2008 Sci. Technol. Adv. Mater. 9 014105
R. D. Blum et al. 2001 The Astronomical Journal 122 1875
T. D. Arber et al. 2009 ApJ 705 1183
Barbara Ancarani(Production Editor) et al 2008 EPL 81 20000
Eric Keto 2003 ApJ 599 1196