title: Measuring body sway of bipedally standing rat and quantitative evaluation of its postural control.
abstract: Human generates very slow (<1 Hz) body sway during standing, and the behavior of this sway is known to be changed characteristically depending on the neural ataxia. In order to investigate the sway mechanism and mechanism of neural ataxia through this sway behavior, the present research proposes an experimental environment of rats under bipedal standing. By the experiment, we succeeded the measurement of six intact rats standing for over 200 seconds without postural supports. Moreover, by comparing measured center of pressure (COP) and that of system model with nonlinear PID control model which is proposed as human standing model, control parameters of rats were numerically evaluated. Evaluated control parameters of rats were close to those of human, i.e., control strategy was considered to be comparable between rats and human.
authors.forename: Yota
authors.initials: Y
authors.lastname: Sato
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Funato
authors.forename: Dai
authors.initials: D
authors.lastname: Yanagihara
authors.forename: Yamato
authors.initials: Y
authors.lastname: Sato
authors.forename: Shinya
authors.initials: S
authors.lastname: Aoi
authors.forename: Soichiro
authors.initials: S
authors.lastname: Fujiki
authors.forename: Kazushi
authors.initials: K
authors.lastname: Nakano
authors.forename: Kazuo
authors.initials: K
authors.lastname: Tsuchiya
mesh_terms: D000818:Animals; D006801:Humans; D017711:Nonlinear Dynamics; D004856:Postural Balance / Q000502:physiology; D011187:Posture / Q000502:physiology*; D011312:Pressure; D017208:Rats, Wistar