Analysis of the posture control system under fixed and sway-referenced support conditions
Analysis of the posture control system under fixed and sway-referenced support conditions
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固定和摇摆参考支撑条件下的姿态控制系统分析
DOI：
10.1109/10.568908
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发表时间：
1997
影响因子：
4.6
通讯作者：
Y. Fukuoka
中科院分区：
文献类型：
--
作者：
A. Ishida;S. Imai;Y. Fukuoka
为了描述姿势控制系统中每个反馈传感器（例如视觉、前庭和本体感受传感器）的相对作用，在以下条件下，将识别技术应用于测量身体和踝关节力矩的前后摇摆角：站在固定支撑物上且眼睛睁开（OX），站在固定支撑物上且眼睛闭合（CX），站在摇摆参考支撑物上且眼睛睁开（OS），并且闭上眼睛站在摇摆参考支架上（CS）。计算了从摇摆角到踝关节力矩的频率响应函数。条件（os）和（cs）的增益和相位特性在高频范围内与Nashner（1972）前庭模型的增益和相位特性相似，这表明前庭系统可能占主导地位。在（cx）条件下比在（ox）条件下的增益更高。从相位特征判断，这可能是由于本体感受传感器的权重比前庭传感器的权重增加。随着平衡任务的要求越来越高，增益有增加的趋势。
To delineate the relative roles of each of the feedback sensors in the posture control system such as the visual, vestibular, and proprioceptive sensors, an identification technique was applied to measurements of antero-posterior sway angles of the body and ankle moments under the following conditions: standing on a fixed support with eyes open (ox), standing on a fixed support with eyes closed (cx), standing on a sway-referenced support with eyes open (os), and standing on a sway-referenced support with eyes closed (cs). Frequency response functions from the sway angle to the ankle moment were calculated. Gain and phase characteristics for conditions (os) and (cs) were similar to those of Nashner's (1972) vestibular model in the high-frequency range, which shows that the vestibular system may be dominant. The gain was higher under condition (cx) than under (ox). Judging from the phase characteristics, this was probably due to increased weighting of the proprioceptive sensor over the vestibular sensor. There was a tendency for gain to increase as balance tasks became more demanding.
影响因子：
2.5
作者：
HORAK, FB;NASHNER, LM
通讯作者：
NASHNER, LM