長期心拍変動のフラクタル解析による脊髄損傷者の自律神経活動の評価

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2012/10/01

タイトル(英語): Evaluation of Fractal Properties of Long Term Heartbeat Fluctuations of Spinal Cord Injury Patients

著者名: 竹野　翔兵（東京大学大学院新領域創成科学研究科），小川　肇（東京大学大学院新領域創成科学研究科／ファナック（株）），尾方　寿好（国立障害者リハビリテーションセンター運動機能系障害研究部／中部大学　生命健康科学部），岸田　悠志（東京大学　工学部），沼田　崇志（東京大学大学院新領域創成科学研究科），中澤　公孝（国立障害者リハビリテーションセンター運動機能系障害研究部／東京大学大学院総合文化研究科），神保　泰彦（東京大学大学院新領域創成科学研究科），小谷　潔（東京大学大学院新領域創成科学研究科）

著者名(英語): Shohei Takeno (Graduate School of Frontier Sciences, The University of Tokyo), Hajime Ogawa (Graduate School of Frontier Sciences, The University of Tokyo/Fanuc Corporation, Servo Laboratory), Hisayoshi Ogata (Department of Rehabilitation for Movement Functions, Research Institute of National Rehabilitation Center for Persons with Disabilities/Department of Lifelong Sports for Health, College of Life and Health Sciences, Chubu University), Yuji Kishida (Depertment of Engeneering, The University of Tokyo), Takashi Numata (Graduate School of Frontier Sciences, The University of Tokyo), Kimitaka Nakazawa (Department of Rehabilitation for Movement Functions, Research Institute of National Rehabilitation Center for Persons with Disabilities/Depertment of Life Science, The University of Tokyo), Yasuhiko Jimbo (Graduate School of Frontier Sciences, The University of Tokyo), Kiyoshi Kotani (Graduate School of Frontier Sciences, The University of Tokyo)

キーワード: 長期心拍変動，脊髄損傷者，フラクタル解析，ハースト指数，相関カスケード解析　　Long Term Heart Rate Variability，Spinal Cord Injury Patients，Fractal Analysis，Hurst Exponent，Correlation Cascade Analysis

要約(英語): It is known that very low frequency of R-R interval (RRI) is induced by the autonomic nervous system, and it is useful to evaluate the property of autonomic control of heart. Therefore, in this study, we analyze long term heartbeat fluctuations of spinal cord injury patients with fractal analysis to evaluate their fractal properties of autonomic nervous system. First, fractal property is obtained using Detrended Fluctuation Analysis. As a result, we find that spinal cord injury subjects have the same correlated volatility of healthy subjects. Second, we apply space-scale correlation using wavelet to their heart rate variability of RRI to quantify local fractal property including cascade structure. In the result, it is found that correlation of spinal cord injury patients is significantly higher than that of healthy subjects. These results present that the differences of circular dynamic state between spinal cord injury subjects and healthy subjects are not observed in the global fractal properties but in the heteroscedasticity.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.132 No.10 （2012） 特集：医療関連電子技術のニュートピック

本誌掲載ページ: 1547-1551 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/ieejeiss/132/10/132_1547/_article/-char/ja/