...
【24h】

What are the factors responsible for the deviation in stepping on the spot?

机译:是什么因素造成当场踩踏偏离?

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Without vision, keeping a straight-ahead direction while stepping on the spot is almost impossible, everybody deviates more or less. Several explanations for this, such as laterality, vestibulo-spinal influence, dopamine system, have been proposed. The aims of the experiment presented here were (1) to quantify the lateral deviation when stepping using a modified Fukuda test apparatus, and (2) to determine the factors potentially underlying such deviation. Twenty-five young adults, blindfolded, performed the experiment which consisted in stepping while holding a rotating vertical roll bar fixed on the wall. Four experimental conditions (i.e., normal, with an imposed pace, dual-task, or with the neck bent) were tested. All participants deviated towards one side or the other in all conditions. Adding an attentional load or imposing a particular pace did not change the amount of deviation. For three conditions (normal, with an imposed pace and dual-task), the deviation towards one side was not significantly larger than towards the other side at the group level. In the bent-neck condition, the deviation was significantly larger than in the other conditions. Furthermore, in this condition the deviation towards the left was significantly larger than the deviation towards the right at the group level. We discussed the results regarding the role of vestibular information and proprioceptive feedback from neck muscles in correcting a spontaneous deviation. Our results, however, go against the idea that sensorimotor lateral preferences are among the factors underlying such deviations, since we found no relationship between lateral preferences (hand, foot, and eye) and the side of deviation.
机译:没有视力,几乎不可能在走动时保持直截了当的方向,每个人或多或少都会偏离。已经提出了对此的几种解释,例如侧向性,前庭脊柱影响,多巴胺系统。此处提出的实验的目的是(1)使用改良的Fukuda测试设备对踏步时的横向偏差进行量化,以及(2)确定潜在导致这种偏差的因素。 25名蒙着眼睛的年轻人进行了实验,包括踩踏时将旋转的垂直滚动杆固定在墙上。测试了四个实验条件(即正常,施加节奏,双重任务或弯曲的脖子)。在所有情况下,所有参与者都偏向一侧或另一侧。增加注意力负荷或施加特定的步伐不会改变偏差量。在三个条件下(正常,具有强制性的节奏和双重任务),在组级别上朝向一侧的偏差不明显大于朝向另一侧的偏差。在弯颈条件下,偏差明显大于其他条件。此外,在这种情况下,在组级别上,向左的偏离明显大于向右的偏离。我们讨论了有关前庭信息和颈部肌肉本体感受反馈在纠正自发性偏差中的作用的结果。然而,我们的结果违背了感觉运动侧向偏好是造成这种偏离的因素之一的想法,因为我们发现侧向偏好(手,脚和眼)与偏离侧之间没有任何关系。

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