Effects of Optic Flow Speed and Lateral Flow Asymmetry on Locomotion in Younger and Older Adults: A Virtual Reality Study
Effects of Optic Flow Speed and Lateral Flow Asymmetry on Locomotion in Younger and Older Adults: A Virtual Reality Study
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DOI：
10.1093/geronb/gbp003
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发表时间：
2009-03-01
影响因子：
6.2
通讯作者：
Cronin-Golomb, Alice
中科院分区：
文献类型：
--
作者：
Chou, Ying-hui;Wagenaar, Robert C.;Cronin-Golomb, Alice
本研究的目的是调查是否有年龄相关的差异，在运动，由于存在的视觉，光流速度的变化，并使用虚拟现实技术的侧流不对称性。步态运动学和航向测量使用三维运动分析系统。虽然老年人和年轻人的影响差异的可用性的视觉，更大的依赖于在老年人在步行过程中的光流信息被发现。步行性能之间的线性关系和流速以及航向和流动不对称性。研究结果表明，在老年人和年轻人中，将光流信息整合到多模态系统中以评估步行速度和前进方向的能力是相当的。
The purpose of the study is to investigate whether there are age-related differences in locomotion due to changes in presence of vision, optic flow speed, and lateral flow asymmetry using virtual reality technology. Gait kinematics and heading direction were measured using a three-dimensional motion analysis system. Although older and younger adults were affected differentially by the availability of vision, a greater dependence on optic flow information in older adults during walking was not found. Linear relations were observed between walking performance and flow speed as well as heading direction and flow asymmetry. The findings suggest that the ability to integrate optic flow information into the multimodal system for assessment of walking speed and heading direction is comparable in older and younger adults.