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A Model-based Interpretation of Phantom Pain -Conservative Body Schema and Flexible Somatotopy-
http://hdl.handle.net/10097/17434
http://hdl.handle.net/10097/17434de5810c2-b581-4549-8cf6-46a04d9db078
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
7_247.pdf (3.2 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2007-06-25 | |||||
| タイトル | ||||||
| タイトル | A Model-based Interpretation of Phantom Pain -Conservative Body Schema and Flexible Somatotopy- | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 著者 |
Nakao, Mitsuyuki
× Nakao, Mitsuyuki× Kawai, Masayoshi× Mizutani, Yoshinari× Katayama, Norihiro× Yamamoto, Mitsuaki |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Some patients with amputations are known to still experience presence of the amputated limb (phantom limb). Phantom limb is found to be accompanied by reorganizations of somatotopic representations at cortical and subcortical levels due to deafferentation, which also discloses presence of body schema, i.e., integrated image of body. In addition, phantom limb is often recognized with painful sensation, i.e., phantom pain, which is suggested to be caused by abnormally high activations in thalamocortical neurons in the deafferentated area. In this paper, simulations using a self-organizing neural network model were performed to clarify contribution of axonal sprouting and body schema to reorganization of cortical representation, and to explore a possible mechanism underlying abnormally high thalamocortical activation. The results showed that axonal sprouting could cause reorganization of cortical mapping with an aid of facilitatory inputs referring to the conserved body schema even after deafferentation. In addition, removing thalamic recurrent inhibitions was shown to induce high and sustained activations in thalamocortical neurons in the deafferentated area. Consequently, this study suggested that discordance between the recognized cortical representation and physiological process referring to the body schema could give rise to phantom pain. Phantom pain is a clue disclosing how body schema is constructed and maintained, which might be an important subject also for robotics dealing with an artificial body. | |||||
| 書誌情報 |
Interdisciplinary information sciences 巻 7, 号 2, p. 247-258, 発行日 2001-09 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1340-9050 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11032627 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 出版者 | ||||||
| 出版者 | Graduate School of Information Sciences, Tohoku University | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 紀要類(bulletin) | |||||
| 登録日 | ||||||
| 日付 | 2007-06-25 | |||||
| 日付タイプ | Created | |||||
| 公開日（投稿完了日） | ||||||
| 日付 | 2007-06-25 | |||||
| 日付タイプ | Created | |||||
| 発行日 | ||||||
| 日付 | 2001-09 | |||||
| 日付タイプ | Created | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 3190141 bytes | |||||
| 更新日 | ||||||
| 日付 | 2010-01-27 | |||||
| 日付タイプ | Created | |||||
