Kavounoudias A, Roll R, Roll J P
Laboratoire de Neurobiologie Humaine, UMR 6562, CNRS-Université de Provence, Marseille, France.
Neuroreport. 1998 Oct 5;9(14):3247-52. doi: 10.1097/00001756-199810050-00021.
This study investigated the role of the plantar cutaneous information in controlling human balance. We hypothesized that the cutaneous afferent messages from the main supporting zones of the feet have sufficient spatial relevance to inform the CNS about the body position with respect to the vertical reference and consequently to induce adapted regulative postural responses. Skin mechanoreceptors of anterior and/or posterior areas of one or both soles of 10 standing subjects were activated by superficial mechanical vibration with high frequency and low amplitude. Variations of the subject's center of pressure (CoP) were recorded. Spatially oriented whole-body tilts were observed for every subject. Their direction depended on the foot areas stimulated and was always opposite to the vibration-simulated pressure increase. These responses are found to subserve a postural regulative function and we suggest that co-processing of the various cutaneous messages followed a vector addition mode.
本研究调查了足底皮肤信息在控制人体平衡中的作用。我们假设，来自足部主要支撑区域的皮肤传入信息具有足够的空间相关性，能够向中枢神经系统告知身体相对于垂直参考方向的位置，从而引发适应性的调节性姿势反应。对10名站立受试者单足或双足前后区域的皮肤机械感受器施加高频低幅的表面机械振动，激活这些感受器。记录受试者压力中心（CoP）的变化。观察到每个受试者都出现了空间定向的全身倾斜。其方向取决于受刺激的足部区域，且总是与振动模拟的压力增加方向相反。这些反应具有姿势调节功能，我们认为各种皮肤信息的协同处理遵循矢量相加模式。
