Sato Yota, Funato Tetsuro, Yanagihara Dai, Sato Yamato, Aoi Shinya, Fujiki Soichiro, Nakano Kazushi, Tsuchiya Kazuo
Annu Int Conf IEEE Eng Med Biol Soc. 2015;2015:5311-4. doi: 10.1109/EMBC.2015.7319590.
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.
人类在站立时会产生非常缓慢（<1 Hz）的身体摆动，并且已知这种摆动的行为会根据神经共济失调而发生特征性变化。为了通过这种摆动行为研究摆动机制和神经共济失调机制，本研究提出了大鼠双足站立的实验环境。通过实验，我们成功测量了六只完整的大鼠在没有姿势支撑的情况下站立超过200秒的情况。此外，通过将测量的压力中心（COP）与作为人体站立模型提出的非线性PID控制模型的系统模型的压力中心进行比较，对大鼠的控制参数进行了数值评估。评估的大鼠控制参数与人类的接近，即认为大鼠和人类之间的控制策略具有可比性。
