重心動揺のランダム性を考慮した時系列解析による立位姿勢保持機能の検討

概要

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Quantitative analysis on body sway variation of the center of gravity is an important aspect in the assessment of motor functioning in aged or disabled patients. In this paper we will report on some methodological problems of the analysis for randomness of body sway fluctuation and its random-walk-like characteristics. In the present study, microscopic structures of random walk phenomena in measured time series of body sway were investigated. Five healthy adults were the subjects. X and Y components of the movement of the center of gravity were recorded separately by a digital data recorder with a sampling frequency of 100 Hz. The time dependent feature of the averaged variation of the squared displacement suggested that the initial short increasing period could be regarded as not simply linear but as a higher order function of time. The role of this kind of fluctuation in cerebellal posture control is discussed.
東海大学の論文
1996-03-30