Degrees of Deterministic of Sway of Center-of-gravity with Alcoholic Intake
Degrees of Deterministic of Sway of Center-of-gravity with Alcoholic Intake
复制标题
重心摇摆随酒精摄入量的确定性程度
DOI：
10.3757/jser.66.1
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
M. Nakayama
中科院分区：
文献类型：
--
作者：
Y. Shimizu;H. Takada;Y. Kitaoka;M. Nakayama
药物作用 (MA) 会破坏小脑（前庭小脑系统）的平衡功能。在龙伯格姿势中，通过稳定测量法每 50 毫秒测量一次的重心似乎会随着酒精摄入而发生变化。在之前的研究中，重心轨迹（静态运动图）被转换为统计指数的值，例如摇摆面积、总轨迹长度和每单位面积的轨迹长度，尽管这些指数并不总能区分从 7 名患有和不患有 MA 的健康年轻男性中采样的静态运动图。该测量是使用 AMTI 测力台进行的。在本研究中，在 d 维嵌入空间中估计了统计指标“平移误差”，以比较摄入双倍稀释白兰地前后 30 秒（1≤d≤10）内记录的静态运动图。我们成功验证了随机微分方程作为身体摇摆的数学模型。模型中的随机性在饮酒后得以保留，并且在内侧/外侧方向上显着增加。站立姿势控制系统引用的视觉信息可以被视为与MA相关的外力。该方法被认为可用于诊断前庭小脑系统疾病。
Equilibrium function in the cerebellum (vestibulo-cerebellar system) is deteriorated by medicinal actions (MAs). In the Romberg posture, the center of gravity, which was measured every 50 msec by stabilometry, appeared to shift with alcohol ingestion. In the previous study, a locus in the center of gravity (statokinesigram) was converted to a value of statistical indices such as area of sway, total locus length, and locus length per unit area, although these indices could not always distinguish between the statokinesigrams sampled from 7 healthy young males presenting with and without MAs. This measurement was made with an AMTI force plate. In this study, a statistical index “translation error” was estimated in a d-dimensional embedding space in order to compare statokinesigrams recorded before and after the ingestion of doubly diluted brandy in 30 s (1≤d≤10). We succeeded in validating a stochastic differential equation as a mathematical model of the body sway. The randomness in the model was preserved after alcohol intake and significantly increased in the medial/lateral direction. Visual information referred by the control system of standing posture might be regarded as an external forcing associated with the MA. This method is considered to be useful to diagnose the disorders of the vestibulo-cerebellar system.