...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of electromyography and kinesiology: Official journal of the International Society of Electrophysiological Kinesiology >Angle of gaze and optic flow direction modulate body sway
【24h】

Angle of gaze and optic flow direction modulate body sway

机译：凝视角和光学流动方向调制体摇摆

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Optic flow is a crucial signal in maintaining postural stability. We sought to investigate whether the activity of postural muscles and body sway was modulated by eye position during the view of radial optic flow stimuli. We manipulated the spatial distribution of dot speed and the fixation point position to simulate specific heading directions combined with different gaze positions. The experiments were performed using stabilometry and surface electromyography (EMG) on 24 right-handed young, healthy volunteers. Center of pressure (COP) signals were analyzed considering antero-posterior and medio-lateral oscillation, COP speed, COP area, and the prevalent direction of oscillation of body sway. We found a significant main effect of body side in all COP parameters, with the right body side showing greater oscillations. The different combinations of optic flow and eye position evoked a non-uniform direction of oscillations in females. The EMG analysis showed a significant main effect for muscle and body side. The results showed that the eye position modulated body sway without changing the activity of principal leg postural muscles, suggesting that the extraretinal input regarding the eye position is a crucial signal that needs to be integrated with perceptual optic flow processing in order to control body sway. (C) 2017 Elsevier Ltd. All rights reserved.
机译：光流是维持姿势稳定性的关键信号。我们试图研究在观察径向光流刺激时，姿势肌肉和身体摆动的活动是否受到眼睛位置的调节。我们操纵了点速度和注视点位置的空间分布，以模拟结合不同注视位置的特定方向。这些实验是在24名右撇子年轻健康志愿者身上进行的，他们使用了稳定性测试和表面肌电图（EMG）。压力中心（COP）信号的分析考虑了前后和中横向振荡、COP速度、COP面积和身体摆动的主要振荡方向。我们发现，在所有COP参数中，身体侧都有显著的主效应，右侧身体侧显示出更大的振荡。光流和眼睛位置的不同组合在雌性动物中引起了不均匀的振荡方向。肌电图分析显示对肌肉和身体侧有显著的主效应。结果表明，眼睛位置在不改变主要腿部姿势肌肉活动的情况下调节身体摆动，这表明关于眼睛位置的视网膜外输入是一个关键信号，需要与知觉光流处理相结合，以控制身体摆动。（C） 2017爱思唯尔有限公司版权所有。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号