Please use this identifier to cite or link to this item: https://doi.org/10.1109/CCMB.2013.6609171
Title: Connectivity pattern modeling of motor imagery EEG
Authors: Li, X.
Ong, S.-H. 
Pan, Y.
Ang, K.K.
Issue Date: 2013
Source: Li, X.,Ong, S.-H.,Pan, Y.,Ang, K.K. (2013). Connectivity pattern modeling of motor imagery EEG. Proceedings of the 2013 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain, CCMB 2013 - 2013 IEEE Symposium Series on Computational Intelligence, SSCI 2013 : 94-100. ScholarBank@NUS Repository. https://doi.org/10.1109/CCMB.2013.6609171
Abstract: In this paper, the functional connectivity network of motor imagery based on EEG is investigated to understand brain function during motor imagery. In particular, partial directed coherence and directed transfer function measurements are applied to multi-channel EEG data to find out event related connectivity pattern with the direction and strength. The t-test is applied to these connectivity measurements to compare the network between motor imagery and the rest state. The possible relationship between this connectivity pattern and subjects performances are discussed. Based on the Granger causality analysis, a feature extraction method is proposed to compensate for nonstationarity in data. By attenuating the time-lagged correlation, this feature extraction method based on the multi-variate autoregression model is proposed to reduce the effects of noises caused by time propagation. The validity of the proposed method is verified through experimental studies with a two-class dataset, and significant improvement in term of classification accuracy is achieved. © 2013 IEEE.
Source Title: Proceedings of the 2013 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain, CCMB 2013 - 2013 IEEE Symposium Series on Computational Intelligence, SSCI 2013
URI: http://scholarbank.nus.edu.sg/handle/10635/69697
ISBN: 9781467358712
DOI: 10.1109/CCMB.2013.6609171
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