Investigation of methods for extracting features related to motor imagery and resting states in EEG-based BCI system

I. Putu Susila, Shinichiro Kanoh, Ko Ichiro Miyamoto, Tatsuo Yoshinobu

研究成果: Article

抄録

Methods for extracting features of motor imagery from 1-channel bipolar EEG were evaluated. The EEG power spectrums which were used as feature vectors were calculated with filter bank, FFT and AR model, and were then classified by linear discriminant analysis (LDA) to discriminate motor imagery and resting states. It was shown that the extraction method using AR model gave the best result with the average true positive rate of 83% (a -7%). Furthermore, when principal component analysis (PCA) was applied to the feature vectors, the dimension of the feature vectors could be reduced without decreasing accuracy of discrimination.

元の言語English
ページ(範囲)1828-1833
ページ数6
ジャーナルIEEJ Transactions on Electronics, Information and Systems
129
発行部数10
DOI
出版物ステータスPublished - 2009
外部発表Yes

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Electroencephalography
Filter banks
Discriminant analysis
Power spectrum
Fast Fourier transforms
Principal component analysis

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

これを引用

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AU - Kanoh, Shinichiro

AU - Miyamoto, Ko Ichiro

AU - Yoshinobu, Tatsuo

PY - 2009

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AB - Methods for extracting features of motor imagery from 1-channel bipolar EEG were evaluated. The EEG power spectrums which were used as feature vectors were calculated with filter bank, FFT and AR model, and were then classified by linear discriminant analysis (LDA) to discriminate motor imagery and resting states. It was shown that the extraction method using AR model gave the best result with the average true positive rate of 83% (a -7%). Furthermore, when principal component analysis (PCA) was applied to the feature vectors, the dimension of the feature vectors could be reduced without decreasing accuracy of discrimination.

KW - Brain-computer interface (BCI)

KW - Feature extraction

KW - Linear discriminant analysis (LDA), principal component analysis (PCA)

KW - Motor imagery

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