The Influence of Paced Sound on Activation of Cerebellum in a Finger Opposition Task: a fMRI Study

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  • KURUMA Hironobu
    Department of Rehabilitation, Koshigaya Municipal Hospital
  • WATANABE Shu
    Department of Health Science, Tokyo Metropolitan University of Health Sciences
  • IKEDA Yumi
    Department of Health Science, Tokyo Metropolitan University of Health Sciences
  • YAMAUCHI Toshie
    Department of Rehabilitation, Shinjuku Ward Welfare Center for People with Disability
  • SENOO Atsushi
    Department of Health Science, Tokyo Metropolitan University of Health Sciences
  • KIKUCHI Yoshiaki
    Department of Health Science, Tokyo Metropolitan University of Health Sciences
  • ABO Masahiro
    Department of Rehabilitation Medicine, Jikei University School of Medicine
  • YONEMOTO Kyozo
    Department of Health Science, Tokyo Metropolitan University of Health Sciences

Bibliographic Information

Other Title
  • 手指対立運動に関するリズム音の影響―機能的ＭＲＩによる小脳の賦活について―
  • シュシ タイリツ ウンドウ ニ カンスル リズムオン ノ エイキョウ キノウテキ MRI ニ ヨル ショウノウ ノ フカツ ニ ツイテ
  • a fMRI Study
  • ―機能的MRIによる小脳の賦活について―

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Abstract

In the field of rehabilitation of patients with Parkinson's disease, external cues (visual or auditory information) are important in execution of activities of daily living, which is called "paradoxical movement". However, the neural mechanism of paradoxical movement is unclear. In order to clarify the influence of external cues (paced sound) on the activation of the cerebellum, we scanned 9 right-handed healthy subjects by functional MRI while they performed (1) self-initiated finger-to-thumb opposition movements once every second, and (2) the same movements externally triggered by a metronome's sound. During self-initiated movements with the right hand, the cerebellum was activated in all subjects. During externally triggered movements, the activation was decreased in 7 of 9 subjects, and vanished in 1 of 9 subjects. During self-initiated movements with the left hand, the cerebellum was activated in 8 of 9 subjects. During externally triggered movements, the activation was decreased in 6 of 8 and vanished in 1 of 8 subjects. These results suggest the cerebellum's role is feed-forward control during self-initiated movements, but external cues take the place of feed-forward control during externally triggered movemesinnnts.<br>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 20 (1), 1-5, 2005

    The Society of Physical Therapy Science

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