Magnusson M, Enbom H, Johansson R, Pyykkö I
Department of Oto-Rhino-Laryngology, University Hospital of Lund, Sweden.
Acta Otolaryngol. 1990 Sep-Oct;110(3-4):182-8. doi: 10.3109/00016489009122535.
The importance to postural control of the mechanoreceptors of the soles was investigated in thirteen healthy subjects. Body-sway velocity was evaluated before and after exposing the subject's feet to hypothermia, and when calf muscles were exposed to vibration at frequencies between 20 and 100 Hz. Subjects were tested both with eyes open and closed. Body-sway velocity was found to increase significantly during hypothermia of the feet. The difference in body-sway between hypothermal and normothermal conditions was less prominent when the subject's eyes were open though the difference was significant in both cases. The present results indicate the importance of the mechanoreceptors of the soles to postural control and elucidate their interaction with compensatory visual input in maintaining postural control. These findings also suggest, that factors affecting pressor input should be taken into consideration when assessing patients with complaints of dysequilibrium.
在13名健康受试者中研究了足底机械感受器对姿势控制的重要性。在受试者双脚暴露于低温之前和之后，以及当小腿肌肉暴露于20至100赫兹频率的振动时，评估身体摆动速度。受试者在睁眼和闭眼两种情况下都进行了测试。发现双脚低温时身体摆动速度显著增加。当受试者睁眼时，低温与正常体温条件下的身体摆动差异不太明显，尽管两种情况下差异均显著。目前的结果表明了足底机械感受器对姿势控制的重要性，并阐明了它们在维持姿势控制中与代偿性视觉输入的相互作用。这些发现还表明，在评估有平衡失调主诉的患者时，应考虑影响压力感受器输入的因素。
