Is event-related desynchronization a biomarker representing corticospinal excitability?

Mitsuaki Takemi, Yoshihisa Masakado, Meigen Liu, Junichi Ushiba

研究成果: Conference contribution

7 引用 (Scopus)

抄録

Brain computer interfaces (BCIs) using event-related desynchronization (ERD) of the electroencephalogram (EEG), which is believed to represent increased activation of the sensorimotor cortex, have attracted attention as tools for rehabilitation of upper limb motor functions in hemiplegic stroke patients. However, it remains unclear whether the corticospinal excitability is actually correlated with ERD. The purpose of this study was to assess the association between the ERD magnitude and the excitability of primary motor cortex (M1) and spinal motoneurons. M1 excitability was tested by motor evoked potentials (MEPs), short-interval intracortical inhibition (SICI) and intracortical facilitation (ICF) using transcranial magnetic stimulation, and spinal motoneuronal excitability was tested by F-waves using peripheral nerve stimulation. Results showed that large ERD during motor imagery was associated with significantly increased F-wave persistence and reduced SICI, but no significant changes in ICF and the response average of F-wave amplitudes. Our findings suggest that ERD magnitude during motor imagery represents the instantaneous excitability of both M1 and spinal motoneurons. This study provides electrophysiological evidence that ERD-based BCI with motor imagery task increases corticospinal excitability as changes accompanying actual movements.

元の言語English
ホスト出版物のタイトルProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
ページ281-284
ページ数4
DOI
出版物ステータスPublished - 2013
イベント2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013 - Osaka, Japan
継続期間: 2013 7 32013 7 7

Other

Other2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013
Japan
Osaka
期間13/7/313/7/7

Fingerprint

Imagery (Psychotherapy)
Biomarkers
Brain-Computer Interfaces
Motor Neurons
Motor Evoked Potentials
Brain computer interface
Transcranial Magnetic Stimulation
Motor Cortex
Peripheral Nerves
Upper Extremity
Electroencephalography
Rehabilitation
Stroke
Bioelectric potentials
Patient rehabilitation
Chemical activation
Association reactions
Inhibition (Psychology)

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Biomedical Engineering
  • Health Informatics

これを引用

Takemi, M., Masakado, Y., Liu, M., & Ushiba, J. (2013). Is event-related desynchronization a biomarker representing corticospinal excitability?Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS (pp. 281-284). [6609492] https://doi.org/10.1109/EMBC.2013.6609492

Is event-related desynchronization a biomarker representing corticospinal excitability? / Takemi, Mitsuaki; Masakado, Yoshihisa; Liu, Meigen; Ushiba, Junichi.

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2013. p. 281-284 6609492.

研究成果: Conference contribution

Takemi, M, Masakado, Y, Liu, M & Ushiba, J 2013, Is event-related desynchronization a biomarker representing corticospinal excitability?Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS., 6609492, pp. 281-284, 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013, Osaka, Japan, 13/7/3. https://doi.org/10.1109/EMBC.2013.6609492
Takemi M, Masakado Y, Liu M, Ushiba J. Is event-related desynchronization a biomarker representing corticospinal excitability? : Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2013. p. 281-284. 6609492 https://doi.org/10.1109/EMBC.2013.6609492
Takemi, Mitsuaki ; Masakado, Yoshihisa ; Liu, Meigen ; Ushiba, Junichi. / Is event-related desynchronization a biomarker representing corticospinal excitability?. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 2013. pp. 281-284
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