Gait deviations induced by visual stimulation in roll

Gait deviations induced by visual stimulation in roll
复制标题

滚动时视觉刺激引起的步态偏差

DOI:
10.1007/s00221-007-1134-6
复制
发表时间:
2008
影响因子:
2
通讯作者:
Strupp M.
Strupp M.
中科院分区:
医学4区
文献类型:
--
作者:
Schneider E;Jahn K;Dieterich M;Brandt T;Strupp M.

文献摘要

参考文献

被引文献

相似文献

运动控制使用本体感受、视觉和前庭信号。前庭贡献先前已经用前庭电刺激(GVS)进行了分析,其主要构成在滚动平面中的虚拟头部固定旋转,这导致步态的极性特异性偏差。在这项研究中,我们研究了视觉障碍是否对步态有类似的影响时,它的作用方向与GVS相同,即,当通过头部固定的视觉滚动运动刺激诱导滚动矢量时。随机点图案在计算机驱动的双目头戴式显示器上以±15°/s的速度不断旋转,该显示器由8名健康参与者佩戴。他们的步态轨迹被跟踪,而他们走了6米的距离。仅在前三到四步观察到刺激效应,但在整个步行距离中没有观察到刺激效应。这些结果是相似的,以前的GVS研究的结果,这表明,在行动的视觉运动刺激在滚动平面的方向是相似的GVS。这两种刺激只会引起滚动平面中的初始平衡响应,但不会对偏航平面中的步态转向做出贡献。
Locomotion control uses proprioceptive, visual, and vestibular signals. The vestibular contribution has been analyzed previously with galvanic vestibular stimulation (GVS), which constitutes mainly a virtual head-fixed rotation in the roll plane that causes polarity-specific deviations of gait. In this study we examined whether a visual disturbance has similar effects on gait when it acts in the same direction as GVS, i.e., when roll vection is induced by head-fixed visual roll motion stimulation. Random dot patterns were constantly rotated in roll at ±15°/s on a computer-driven binocular head-mounted display that was worn by eight healthy participants. Their gait trajectories were tracked while they walked a distance of 6 m. A stimulation effect was observed only for the first three to four steps, but not for the whole walking distance. These results are similar to the results of previous GVS studies, suggesting that in terms of the direction of action visual motion stimulations in the roll plane are similar to GVS. Both kinds of stimulation cause only initial balance responses in the roll plane but do not contribute to the steering of gait in the yaw plane.
视觉运动刺激,而不是视觉诱导的自我运动感知,使感知的垂直方向产生偏差。
DOI: --
发表时间: 2002
期刊: Brain research. Cognitive brain research
影响因子: --
作者:
K. Thilo;M. Gresty
通讯作者: M. Gresty
DOI: 10.1097/00001756-200005150-00038
发表时间: 2000-05-15
期刊: NEUROREPORT
影响因子: 1.7
作者:
Schneider, E;Glasauer, S;Dieterich, M
通讯作者: Dieterich, M
视觉在重力定向中的作用。
DOI: --
发表时间: 1975
期刊: Fortschritte der Zoologie
影响因子: --
作者:
J. Dichgans;T. Brandt;R. Held
通讯作者: R. Held
视觉场景的线性运动引起的姿势调整
DOI: --
发表时间: 1977
影响因子: 2
作者:
F. Lestienne;J. F. Soechting;A. Berthoz
通讯作者: A. Berthoz
跑步机运动期间的姿势稳定性作为三维虚拟环境的视觉极性和旋转的函数
DOI: 10.1162/1054746041422299
发表时间: 2004
期刊: Presence: Teleoperators & Virtual Environments
影响因子: --
作者:
J. T. Richards;A. Mulavara;J. Bloomberg
通讯作者: J. Bloomberg