Gianna-Poulin Claire, Wood Scott, Brock Matt, Black F Owen
Neurology Department, Legacy Clinical Research & Technology Center, Portland, OR 97208-3950, USA.
Acta Otolaryngol. 2004 Oct;124(8):937-40. doi: 10.1080/00016480410017503.
To investigate the effect of imagining a fixed spatial reference on balance control.
Twenty-one healthy subjects were asked to remain as stable as possible while standing on a sway-referenced platform (NeuroCom Equitest posturography system). Subjects were instructed to keep their eyes open in the dark and to either look far into the distance without fixating on any particular point in space or to direct their gaze towards a remembered earth-fixed target (25-cm distant). Room lights were switched off immediately before each 20-s sway recording. Postural stability measures included equilibrium scores and root-mean-square sway amplitudes in the anterior-posterior plane.
Postural sway was not influenced by the instruction to gaze towards a remembered target.
Imagining a fixed spatial reference does not influence postural control, at least during sway-referenced dynamic posturography.
研究想象一个固定空间参考对平衡控制的影响。
21名健康受试者被要求站在一个摇摆参考平台（NeuroCom Equitest姿势描记系统）上尽可能保持稳定。受试者被指示在黑暗中睁开眼睛，要么看向远方而不注视空间中的任何特定点，要么将目光指向一个记忆中的固定在地面的目标（距离25厘米）。在每次20秒的摇摆记录前立即关闭房间灯光。姿势稳定性测量包括平衡分数和前后平面内的均方根摇摆幅度。
注视记忆目标的指令对姿势摇摆没有影响。
至少在摇摆参考动态姿势描记期间，想象一个固定空间参考不会影响姿势控制。
