TMSにおける大脳皮質の構造を考慮した刺激部位推定についてのfMRIによる妥当性の検証

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2012/10/01

タイトル(英語): Validity of Method for Estimation of Stimulating Site Based on Cortical Structure in TMS Examined by fMRI

著者名: 小田垣　雅人（前橋工科大学工学部），福田　浩士（広島市立大学大学院情報科学研究科），村中　博幸（広島市総合リハビリテーションセンター），樋脇　治（広島市立大学大学院情報科学研究科）

著者名(英語): Masato Odagaki (Undergraduate Department of Industry, Maebashi Institute of Technology), Hiroshi Fukuda (Graduate School of Information Sciences, Hiroshima City University), Hiroyuki Muranaka (Hiroshima City General Rehabilitation Center), Osamu Hiwaki (Graduate School of Information Sciences, Hiroshima City University)

キーワード: 経頭蓋磁気刺激，機能的磁気共鳴画像，大脳皮質第一次運動野，刺激部位　　Transcranial Magnetic Stimulation，Functional Magnetic Resonance Image，Primary Motor Cortex，Stimulating Site

要約(英語): Transcranial magnetic stimulation (TMS) is a noninvasive method for the stimulating brain nerve. Knowing the stimulated brain site in TMS is important to assess the brain function, however it is not easy to identify the stimulating point by TMS so that the induced electric fields is broadly distributed in the brain. Figure-of-eight coil can localize the induced electric field for the target cortical area. We determine the stimulating point by the strength of electric fields. However the nerve excitation property related to the fiber orientation for the induced electric field must be considered. We have proposed a novel method considering the nerve excitation property to estimate the stimulated brain site in TMS. fMRI observed during the motor task enables us to know the motor cortical area precisely. In this study, we measured the cortical area activated during the index and little finger motor task by fMRI and compared the stimulating site innervating the index and little finger muscles estimated by our estimation method. We confirmed the validity of our method for estimation of stimulating sites in TMS by fMRI.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.132 No.10 （2012） 特集：脳機能計測技術

本誌掲載ページ: 337-342 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/132/10/132_337/_article/-char/ja/