Performance analysis of left/right hand movement classification from EEG signal by intelligent algorithms

Saugat Bhattacharyya, Anwesha Khasnobish, Amit Konar, D. N. Tibarewala, Atulya K. Nagar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

46 Citations (Scopus)
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Abstract

Brain Computer interfaces (BCI) has immense potentials to improve human lifestyle including that of the disabled. BCI has possible applications in the next generation human-computer, human-robot and prosthetic/assistive devices for rehabilitation. The dataset used for this study has been obtained from the BCI competition-II 2003 databank provided by the University of Technology, Graz. After pre-processing of the signals from their electrodes (C3 & C4), the wavelet coefficients, Power Spectral Density of the alpha and the central beta band and the average power of the respective bands have been employed as features for classification. This paper presents a comparative study of different classification methods including linear discriminant analysis (LDA), Quadratic discriminant analysis (QDA), k-nearest neighbor (KNN) algorithm, linear support vector machine (SVM), radial basis function (RBF) SVM and naive Bayesian classifiers algorithms in differentiating the raw EEG data obtained, into their associative left/right hand movements. Performance of left/right hand classification is studied using both original features and reduced features. The feature reduction here has been performed using Principal component Analysis (PCA). It is as observed that RBF kernelised SVM classifier indicates the highest performance accuracy of 82.14% with both original and reduced feature set. However, experimental results further envisage that all the other classification techniques provide better classification accuracy for reduced data set in comparison to the original data. It is also noted that the KNN classifier improves the classification accuracy by 5% when reduced features are used instead of the original.

Original languageEnglish
Title of host publicationIEEE SSCI 2011 - Symposium Series on Computational Intelligence - CCMB 2011
Subtitle of host publication2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain
Pages1-8
Number of pages8
DOIs
Publication statusPublished - 10 Aug 2011
EventSymposium Series on Computational Intelligence, IEEE SSCI 2011 - 2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain, CCMB 2011 - Paris, France
Duration: 11 Apr 201115 Apr 2011

Publication series

NameIEEE SSCI 2011 - Symposium Series on Computational Intelligence - CCMB 2011: 2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain

Conference

ConferenceSymposium Series on Computational Intelligence, IEEE SSCI 2011 - 2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain, CCMB 2011
CountryFrance
CityParis
Period11/04/1115/04/11

Keywords

  • Bayesian
  • BCI
  • EEG
  • ERD/ERS
  • KNN
  • LDA
  • PCA
  • PSD
  • QDA
  • SVM
  • Wavelet

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    Bhattacharyya, S., Khasnobish, A., Konar, A., Tibarewala, D. N., & Nagar, A. K. (2011). Performance analysis of left/right hand movement classification from EEG signal by intelligent algorithms. In IEEE SSCI 2011 - Symposium Series on Computational Intelligence - CCMB 2011: 2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (pp. 1-8). [5952111] (IEEE SSCI 2011 - Symposium Series on Computational Intelligence - CCMB 2011: 2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain). https://doi.org/10.1109/CCMB.2011.5952111