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EEG Dimension Reduction in Motor Imagery-based BCI Approach

Received: 7 December 2021    Accepted: 4 January 2022    Published: 12 January 2022
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Abstract

Although a significant number of studies have been devoted to the investigation of the electrographic correlates and neurophysiological mechanisms of voluntary movement and motor imagery-related brain activity, there is a question on which EEG characteristics reflect its content. Considering that motor imagery is a complex cognitive process which requires coordinated activity of a number of cortical structures of the hemispheres, the EEG dimension reduction problems were studied. The values were recorded from 14 channels in eight subjects in the task of voluntary movement execution and motor imagery activity. The principal component analysis has shown that the orthogonal transformation of the EEG channels has formed of 3 components, sufficient to describe a multidimensional brain pattern. The description of invariant EEG patterns of voluntary movements and motor imagery can be performed on the basis of a compressed set of features of the covariance matrix. It has been shown that frontal and central areas as critical brain structures controlling behaviour predominantly participated in the performance of movement execution. Whereas under conditions of motor imagery-related brain activity, the loci remaining in the primary motor cortex were additionally formed in the parieto-occipital associative regions of the brain, with a partial dominance of the right hemisphere. The eigenvectors of target spatio-temporal EEG patterns associated with the movements execution and motor imagery can be used as markers for classification in the BCIs.

Published in Advances in Applied Physiology (Volume 7, Issue 1)
DOI 10.11648/j.aap.20220701.11
Page(s) 1-7
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

EEG, Movement Execution, Motor Imagery, Dimension Reduction, Component, PCA, LDA

References
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  • APA Style

    Dmitry Lazurenko, Valery Kiroy, Dmitry Shaposhnikov. (2022). EEG Dimension Reduction in Motor Imagery-based BCI Approach. Advances in Applied Physiology, 7(1), 1-7. https://doi.org/10.11648/j.aap.20220701.11

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    ACS Style

    Dmitry Lazurenko; Valery Kiroy; Dmitry Shaposhnikov. EEG Dimension Reduction in Motor Imagery-based BCI Approach. Adv. Appl. Physiol. 2022, 7(1), 1-7. doi: 10.11648/j.aap.20220701.11

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    AMA Style

    Dmitry Lazurenko, Valery Kiroy, Dmitry Shaposhnikov. EEG Dimension Reduction in Motor Imagery-based BCI Approach. Adv Appl Physiol. 2022;7(1):1-7. doi: 10.11648/j.aap.20220701.11

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  • @article{10.11648/j.aap.20220701.11,
      author = {Dmitry Lazurenko and Valery Kiroy and Dmitry Shaposhnikov},
      title = {EEG Dimension Reduction in Motor Imagery-based BCI Approach},
      journal = {Advances in Applied Physiology},
      volume = {7},
      number = {1},
      pages = {1-7},
      doi = {10.11648/j.aap.20220701.11},
      url = {https://doi.org/10.11648/j.aap.20220701.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aap.20220701.11},
      abstract = {Although a significant number of studies have been devoted to the investigation of the electrographic correlates and neurophysiological mechanisms of voluntary movement and motor imagery-related brain activity, there is a question on which EEG characteristics reflect its content. Considering that motor imagery is a complex cognitive process which requires coordinated activity of a number of cortical structures of the hemispheres, the EEG dimension reduction problems were studied. The values were recorded from 14 channels in eight subjects in the task of voluntary movement execution and motor imagery activity. The principal component analysis has shown that the orthogonal transformation of the EEG channels has formed of 3 components, sufficient to describe a multidimensional brain pattern. The description of invariant EEG patterns of voluntary movements and motor imagery can be performed on the basis of a compressed set of features of the covariance matrix. It has been shown that frontal and central areas as critical brain structures controlling behaviour predominantly participated in the performance of movement execution. Whereas under conditions of motor imagery-related brain activity, the loci remaining in the primary motor cortex were additionally formed in the parieto-occipital associative regions of the brain, with a partial dominance of the right hemisphere. The eigenvectors of target spatio-temporal EEG patterns associated with the movements execution and motor imagery can be used as markers for classification in the BCIs.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - EEG Dimension Reduction in Motor Imagery-based BCI Approach
    AU  - Dmitry Lazurenko
    AU  - Valery Kiroy
    AU  - Dmitry Shaposhnikov
    Y1  - 2022/01/12
    PY  - 2022
    N1  - https://doi.org/10.11648/j.aap.20220701.11
    DO  - 10.11648/j.aap.20220701.11
    T2  - Advances in Applied Physiology
    JF  - Advances in Applied Physiology
    JO  - Advances in Applied Physiology
    SP  - 1
    EP  - 7
    PB  - Science Publishing Group
    SN  - 2471-9714
    UR  - https://doi.org/10.11648/j.aap.20220701.11
    AB  - Although a significant number of studies have been devoted to the investigation of the electrographic correlates and neurophysiological mechanisms of voluntary movement and motor imagery-related brain activity, there is a question on which EEG characteristics reflect its content. Considering that motor imagery is a complex cognitive process which requires coordinated activity of a number of cortical structures of the hemispheres, the EEG dimension reduction problems were studied. The values were recorded from 14 channels in eight subjects in the task of voluntary movement execution and motor imagery activity. The principal component analysis has shown that the orthogonal transformation of the EEG channels has formed of 3 components, sufficient to describe a multidimensional brain pattern. The description of invariant EEG patterns of voluntary movements and motor imagery can be performed on the basis of a compressed set of features of the covariance matrix. It has been shown that frontal and central areas as critical brain structures controlling behaviour predominantly participated in the performance of movement execution. Whereas under conditions of motor imagery-related brain activity, the loci remaining in the primary motor cortex were additionally formed in the parieto-occipital associative regions of the brain, with a partial dominance of the right hemisphere. The eigenvectors of target spatio-temporal EEG patterns associated with the movements execution and motor imagery can be used as markers for classification in the BCIs.
    VL  - 7
    IS  - 1
    ER  - 

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Author Information
  • Research Center for Neurotechnology, Southern Federal University (SFedU), Rostov-on-Don, Russia

  • Research Center for Neurotechnology, Southern Federal University (SFedU), Rostov-on-Don, Russia

  • Research Center for Neurotechnology, Southern Federal University (SFedU), Rostov-on-Don, Russia

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