Keshner E A, Dokka K, Kenyon R V
Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, Illinois 60611, USA.
Cyberpsychol Behav. 2006 Apr;9(2):163-6. doi: 10.1089/cpb.2006.9.163.
We examined how spatial and temporal characteristics of the perception of self-motion, generated by constant velocity visual motion, was reflected in orientation of the head and whole body of young adults standing in a CAVE, a virtual environment that presents wide field of view stereo images with context and texture. Center of pressure responses from a force plate and perception of self-motion through orientation of a hand-held wand were recorded. The influence of the perception of self-motion on postural kinematics differed depending upon the plane and complexity of visual motion. Postural behaviors generated through the perception of self-motion appeared to contain a confluence of the cortically integrated visual and vestibular signals and of other somatosensory inputs. This would suggest that spatial representation during motion in the environment is modified by both ascending and descending controls. We infer from these data that motion of the visual surround can be used as a therapeutic tool to influence posture and spatial orientation, particularly in more visually sensitive individuals following central nervous system (CNS) impairment.
我们研究了由匀速视觉运动产生的自我运动感知的时空特征，是如何在置身于CAVE（一种虚拟环境，可呈现带有背景和纹理的宽视野立体图像）中的年轻成年人的头部和全身定向中得到体现的。记录了来自测力板的压力中心反应以及通过手持魔杖的定向对自我运动的感知。自我运动感知对姿势运动学的影响因视觉运动的平面和复杂性而异。通过自我运动感知产生的姿势行为似乎包含了皮层整合的视觉和前庭信号以及其他体感输入的融合。这表明环境中运动期间的空间表征会受到上行和下行控制的影响。我们从这些数据中推断，视觉环境的运动可以用作一种治疗工具来影响姿势和空间定向，特别是对于中枢神经系统（CNS）受损后视觉更敏感的个体。
