Changes of γ Band Oscillation during Non-dominant Hand Finger Movements

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  • MIZOGUCHI Takayuki
    Department of Rehabilitation, Nursing Home Suigouen
  • IKEDA Takuro
    Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare Graduate School of Health Sciences, International University of Health and Welfare
  • TAKASHIMA Miwa
    Department of Rehabilitation, Yanagawa Institute for Developmental Disabilities
  • GOTO Kazuhiko
    Faculty of Science and Engineering, Saga University
  • OKA Shinichiro
    Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare Graduate School of Health Sciences, International University of Health and Welfare
  • GOTO Yoshinobu
    Graduate School of Health Sciences, International University of Health and Welfare Department of Physiology, School of Medicine, International University of Health and Welfare

Bibliographic Information

Other Title
  • 非利き手運動中のγ帯域律動反応の変化
  • ヒキキテ ウンドウ チュウ ノ gタイイキ リツドウ ハンノウ ノ ヘンカ

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Abstract

<p>[Purpose] This study investigated the differences in brain gamma-band oscillations between non-dominant and dominant hands during volitional finger movements. [Participants and Methods] This study enrolled nine healthy participants, who performed volitional finger movements with the dominant (right) or non-dominant (left) hands for 20 s. Electroencephalograms were recorded from 20 scalp electrodes using the International 10–20 system, and the waveforms were subjected to fast Fourier transform to determine the amplitude at each electrode. The topographic distributions between low (30–90 Hz) and high (90–120 Hz) gamma-band oscillations were then plotted. [Results] During non-dominant hand movements, high gamma-band oscillation expanded to the bilateral prefrontal and ipsilateral sensorimotor areas. In contrast, the low gamma-band oscillation expanded to the bilateral sensorimotor areas. [Conclusion] Our results suggest that low and high gamma-band oscillations indicate activity in the bilateral sensorimotor areas during non-dominant hand movement.</p>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 35 (4), 527-531, 2020

    The Society of Physical Therapy Science

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