Noise-enhanced human balance control
Noise-enhanced human balance control
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DOI：
10.1103/physrevlett.89.238101
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发表时间：
2002-12-02
影响因子：
8.6
通讯作者：
Collins, JJ
中科院分区：
文献类型：
--
作者：
Priplata, A;Niemi, J;Collins, JJ
在某些非线性系统中，噪声可以通过一种称为随机共振的机制增强对弱信号的检测和传输。在这里，我们展示了输入噪声可以用来改善人类的运动控制。具体来说，我们表明，在安静站立时，年轻人和老年人的姿势摇摆可以通过对脚施加亚感觉机械噪音来显着减少。我们进一步证明，在输入噪声的情况下，老年受试者的姿势摇摆倾向于减少到年轻受试者的水平。这些结果表明，基于噪音的设备，如随机振动的鞋垫，可能使人们克服由于年龄相关的感官丧失而造成的功能障碍。
Noise can enhance the detection and transmission of weak signals in certain nonlinear systems, via a mechanism known as stochastic resonance. Here we show that input noise can be used to improve motor control in humans. Specifically, we show that the postural sway of both young and elderly individuals during quiet standing can be significantly reduced by applying subsensory mechanical noise to the feet. We further demonstrate with input noise a trend towards the reduction of postural sway in elderly subjects to the level of young subjects. These results suggest that noise-based devices, such as randomly vibrating shoe inserts, may enable people to overcome functional difficulties due to age-related sensory loss.