Difference between Right and Left Activation of Sensorimotor Cortex during Finger Opposition Task-Functional MRI Study-

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  • MATSUDA Tadamitsu
    Department of Physical Therapy, Yokohama Ryouiku Medical Center Department of Physical Therapy, Tokyo Metropolitan University Gradate Schools of Health Sciences
  • WATANABE Shu
    Department of Physical Therapy, Tokyo Metropolitan University Gradate Schools of Health Sciences
  • KURUMA Hironobu
    Department of Physical Therapy, Tokyo Metropolitan University Gradate Schools of Health Sciences
  • TSUBUKI Momoko
    Department of Physical Therapy, Ikegami General Hospital
  • MURAKAMI Yoshiyuki
    Department of Physical Therapy, Edogawa Medical Special School
  • IKEDA Yumi
    Department of Physical Therapy, Tokyo Metropolitan University Gradate Schools of Health Sciences
  • SENOU Atushi
    Department of Physical Therapy, Tokyo Metropolitan University Gradate Schools of Health Sciences
  • YONEMOTO Kyouzou
    Department of Physical Therapy, Tokyo Metropolitan University Gradate Schools of Health Sciences

Bibliographic Information

Other Title
  • 手指対立運動における感覚運動野の賦活に関する左右差の検討―機能的ＭＲＩによる分析―
  • シュシ タイリツ ウンドウ ニ オケル カンカク ウンドウヤ ノ フカツ ニ カンスル サユウサ ノ ケントウ キノウテキ MRI ニ ヨル ブンセキ
  • -Functional MRI Study-
  • -機能的MRIによる分析-

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Abstract

In order to clarify asymmetry of functional activation in the sensorimotor cortex (SMC), we scanned 12 right-handed healthy subjects with functional MRI while they performed self-initiated sequential opposition movements of the thumb to each finger every 1 second with the right and left hands. Movement of the left hand resulted in greater activation of the SMC contralateral to the movements than that of the right hand (Mean BOLD signals: 11.68 with right hand, 16.82 with left hand. p<0.05). With respect to spatial distribution of activated SMC, finger movements activated contralateral SMC with the right hand, whereas bilateral SMC was activated with the left hand. These results support the hypothesis that unskillful movements, as with left hand in this study, require more neural participation than skillful movements.<br>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 21 (4), 387-391, 2006

    The Society of Physical Therapy Science

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