TY - GEN
T1 - Fractal dimension for detection of ERD/ERS patterns in asynchronous brain computer interface
AU - Sadeghian, Elnaz Banan
AU - Moradi, Mohammad Hassan
PY - 2008
Y1 - 2008
N2 - Detection of motor-related events is the key issue in asynchronous Brain-Computer Interface design. In this study we exploited for the first time Katz's fractal dimension for detection of motor related changes characterized by ERD/ERS patterns in Electroencephalogram signal. Our observation was that the activation/deactivation of brain's cortical neural systems, during occurrence of motor activity, changes the complexity or randomness of spontaneous EEG and can be quantified accurately with fractal dimension. Furthermore, we applied a Cross-Correlation Template Matching (CCTM) method on the extracted features to combine the energy changes of both ERD and ERS patterns. This combination boosts the system capability and rapidity in motor activity detection. Evaluations of our proposed method shows advantage compared to entropy features extracted in [2], and reveals true positive rates of 90%-100% with corresponding false positive rates of 16.12%-0%, respectively.
AB - Detection of motor-related events is the key issue in asynchronous Brain-Computer Interface design. In this study we exploited for the first time Katz's fractal dimension for detection of motor related changes characterized by ERD/ERS patterns in Electroencephalogram signal. Our observation was that the activation/deactivation of brain's cortical neural systems, during occurrence of motor activity, changes the complexity or randomness of spontaneous EEG and can be quantified accurately with fractal dimension. Furthermore, we applied a Cross-Correlation Template Matching (CCTM) method on the extracted features to combine the energy changes of both ERD and ERS patterns. This combination boosts the system capability and rapidity in motor activity detection. Evaluations of our proposed method shows advantage compared to entropy features extracted in [2], and reveals true positive rates of 90%-100% with corresponding false positive rates of 16.12%-0%, respectively.
KW - Asynchronous brain-controlled switch
KW - ERD/ERS patterns
KW - Fractal dimension
UR - http://www.scopus.com/inward/record.url?scp=50949128151&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50949128151&partnerID=8YFLogxK
U2 - 10.1109/ICBBE.2008.136
DO - 10.1109/ICBBE.2008.136
M3 - Conference contribution
AN - SCOPUS:50949128151
SN - 9781424417483
T3 - 2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
SP - 560
EP - 563
BT - 2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
T2 - 2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
Y2 - 16 May 2008 through 18 May 2008
ER -