Freitas Júnior Paulo B, Barela José A
Laboratory of Movement Studies, Department of Physical Education, Institute of Biosciences, State University of São Paulo, Rio Claro, Brazil.
Neurosci Lett. 2004 Oct 7;369(1):64-8. doi: 10.1016/j.neulet.2004.07.075.
The goals of this study were to examine the visual information influence on body sway as a function of self- and object-motion perception and visual information quality. Participants that were aware (object-motion) and unaware (self-motion) of the movement of a moving room were asked to stand upright at five different distances from its frontal wall. The visual information effect on body sway decreased when participants were aware about the sensory manipulation. Moreover, while the visual influence on body sway decreased as the distance increased in the self-motion perception, no effects were observed in the object-motion mode. The overall results indicate that postural control system functioning can be altered by prior knowledge, and adaptation due to changes in sensory quality seem to occur in the self- but not in the object-motion perception mode.
本研究的目的是检验视觉信息对身体摇摆的影响，该影响是自我运动感知和物体运动感知以及视觉信息质量的函数。要求那些知道（物体运动）和不知道（自我运动）移动房间运动的参与者在距其前壁五个不同距离处直立站立。当参与者意识到感觉操纵时，视觉信息对身体摇摆的影响会降低。此外，虽然在自我运动感知中，视觉对身体摇摆的影响随着距离增加而降低，但在物体运动模式中未观察到影响。总体结果表明，姿势控制系统的功能可因先验知识而改变，并且由于感觉质量变化而产生的适应似乎发生在自我运动感知模式而非物体运动感知模式中。
