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タイトル: Structured movement representations of a phantom limb associated with phantom limb pain
著者: Osumi, Michihiro
Sumitani, Masahiko
Wake, Naoki
Sano, Yuko
Ichinose, Akimichi
Kumagaya, Shin-ichiro
Kuniyoshi, Yasuo
Shu Morioka
キーワード: Phantom limb pain
Movement representation
Bimanual coordination
発行日: 2015年9月25日
出版者: Elsevier
掲載誌情報: Michihiro Osumi, Masahiko Sumitani, Naoki Wake, Yuko Sano, Akimichi Ichinose, Shin-ichiro Kumagaya, Yasuo Kuniyoshi, Shu Morioka, "Structured Movement Representations of a Phantom Limb Associated with Phantom Limb Pain", Neuroscience Letters Online Edition: 2015/08/10 (Japan time), doi:10.1016/j.neulet.2015.08.009.
関連URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/definitive-mechanism-of-phantom-limb-pain.html
抄録: The relation between phantom limb pain (PLP) and the movement representation of a phantom limb remains controversial in several areas of neurorehabilitation, although there are a few studies in which the representation of phantom limb movement was precisely evaluated. We evaluated the structured movement representation of a phantom limb objectively using a bimanual circle–line coordination task. We then investigated the relation between PLP and the structured movement representation. Nine patients with a brachial plexus avulsion injury were enrolled who perceived a phantom limb and had neuropathic pain. While blindfolded, the participants repeatedly drew vertical lines using the intact hand and intended to draw circles using the phantom limb simultaneously. “Drawing of circles” by the phantom limb resulted in an oval transfiguration of the vertical lines (“bimanual coupling” effect). We used an arbitrary ovalization index (OI) to quantify the oval transfiguration. When the OI neared 100%, the trajectory changed toward becoming more circular. A significant negative correlation was observed between the intensity of PLP and the OI (r = −0.66, p < 0.05). Our findings directly suggest that structured movement representations of the phantom limb are necessary for alleviating PLP.
内容記述: UTokyo Research掲載「失った手足の痛みを感じる仕組み」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/definitive-mechanism-of-phantom-limb-pain.html
UTokyo Research "Definitive mechanism of phantom limb pain" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/definitive-mechanism-of-phantom-limb-pain.html
URI: http://hdl.handle.net/2261/60926
ISSN: 0304-3940
出現カテゴリ:014 自然科学
1128010 学術雑誌論文


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