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Elucidation of functional brain areas involved in lifting a small object using a precision grip with visual guidance : A PET study Hayato Tsuda 1 , Tomoko Aoki 2 , Naohiko Oku 3 , Jun Hatazawa 3 , Hiroshi Kinoshita 2 1Department of Occupational Therapy, Kawasaki College of Medical Technology 2School of Health and Sports Science and Graduate School of Human Science, Osaka University 3Division of Nuclear Medicine and Tracer Kinetics, Graduate School of Medicine, Osaka University Keyword: 精密把握 , 脳血流 , 視覚 , 健常者 , Precision grip , rCBF(regional cerebral blood flow) , Vision , Normal volunteers pp.40-49
Published Date 2005/2/15
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 The neural network governing voluntary motor control is now known to be distributed over multiple cortical and sub-cortical structures. The aim of this study was to elucidate the functional brain areas associated with a task of lifting a small object repetitively to a target using a visually guided precision grip between the index finger and thumb. An H215O positron emission tomography (PET) was performed to measure regional cerebral blood flow in 23 normal volunteers who performed the task. A comparison between visually guided precision grip and the rest condition (eyes closed) revealed significant activation of the primary motor area (Ml), primary sensory area (SI), pre-motor area (PM), supplementary motor area (SMA), cingulated motor area (CMA), parietal cortex (BA7), frontal cortex (BA11), occipital cortex (BA17, 18), thalamus and cerebellum.


Copyright © 2005, Japanese Association of Occupational Therapists. All rights reserved.

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電子版ISSN 印刷版ISSN 0289-4920 日本作業療法士協会

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