Straube A, Krafczyk S, Paulus W, Brandt T
Department of Neurology, Klinikum Grosshadern, Munich, Germany.
Exp Brain Res. 1994;99(3):501-6. doi: 10.1007/BF00228986.
Monocular visual stabilization of fore-aft and lateral body sway was tested posturographically in normal subjects (wearing visual field blinds) as a function of visual field size and location of the visual field on the central or peripheral retina. Body sway applied to a force- measuring platform is less with central (foveal) vision when central and peripheral visual fields have the same area. If, however, the peripheral field size is corrected by the cortical magnification factor of the retina in the primary cortex, body sway is stabilized by the peripheral retina to the same extent. Thus, there is no functional specialization of central and peripheral retina with respect to balance control. Visual stabilization of upright stance is a function of field size and cortical representation of the retina. The central and the peripheral retina have different thresholds to detect motion; this was surprisingly not reflected in measurements of normal fore-aft and lateral body sway.
在正常受试者（佩戴视野眼罩）中，通过姿势描记法测试了单眼对身体前后和左右摆动的视觉稳定作用，该作用是视野大小以及视野在中央或周边视网膜上位置的函数。当中央和周边视野面积相同时，通过中央（中央凹）视觉施加到测力平台上的身体摆动较小。然而，如果根据初级皮层中视网膜的皮质放大因子校正周边视野大小，那么周边视网膜对身体摆动的稳定作用程度相同。因此，在平衡控制方面，中央和周边视网膜不存在功能特化。直立姿势的视觉稳定是视野大小和视网膜皮质表征的函数。中央和周边视网膜检测运动的阈值不同；令人惊讶的是，这在正常身体前后和左右摆动的测量中并未体现出来。
