Altered Spatiotemporal Gaze Dynamics During Unexpected Obstacle Negotiation in a Fatigued State.

IF 0.9 4区医学 Q4 NEUROSCIENCES

Motor Control Pub Date : 2022-01-01 Epub Date: 2021-12-10 DOI:10.1123/mc.2021-0046

Jacob W Hinkel-Lipsker, Nicole M Stoehr, Pranavi L Depur, Michael A Weise, Joshua A Vicente, Stefanie A Drew, Sean M Rogers

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引用次数: 0

Abstract

Humans use their peripheral vision during locomotion to perceive an approaching obstacle in their path, while also focusing central gaze on steps ahead of them. However, certain physiological and psychological factors may change this strategy, such as when a walker is physically fatigued. In this study, 21 healthy participants walked through a dark room while wearing eye tracking glasses before and following intense exercise. Obstacles were placed in random locations along their path and became illuminated when participants approached them. Results indicate that, when fatigued, participants had altered spatial gaze strategies, including more frequent use of central gaze to perceive obstacles and an increased gaze angular displacement. However, there were no changes in temporal gaze strategies following exercise. These findings reveal how physical fatigue alters one's visual perception of their environment during locomotion, and may partially explain why people are at greater risk of trips and falls while fatigued.

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疲劳状态下穿越意外障碍时的时空注视动态变化。

人类在运动过程中使用周边视觉来感知道路上接近的障碍物，同时也将中央视线集中在他们前面的台阶上。然而，某些生理和心理因素可能会改变这种策略，比如当步行者身体疲劳时。在这项研究中，21名健康的参与者在剧烈运动前后戴着眼球追踪眼镜穿过一个黑暗的房间。障碍物被随机放置在沿途的位置，当参与者靠近障碍物时，障碍物就会被照亮。结果表明，当疲劳时，参与者改变了空间凝视策略，包括更频繁地使用中央凝视来感知障碍物和增加的凝视角位移。然而，在锻炼后，时间凝视策略没有变化。这些发现揭示了身体疲劳如何在运动过程中改变一个人对环境的视觉感知，并可能部分解释为什么人们在疲劳时更容易绊倒和跌倒。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Motor Control 医学-神经科学

CiteScore

1.80

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： Motor Control (MC), a peer-reviewed journal, provides a multidisciplinary examination of human movement across the lifespan. To keep you abreast of current developments in the field of motor control, it offers timely coverage of important topics, including issues related to motor disorders. This international journal publishes many types of research papers, from clinical experimental to modeling and theoretical studies. These papers come from such varied disciplines as biomechanics, kinesiology, neurophysiology, neuroscience, psychology, physical medicine, and rehabilitation. Motor Control, the official journal of the International Society of Motor Control, is designed to provide a multidisciplinary forum for the exchange of scientific information on the control of human movement across the lifespan, including issues related to motor disorders. Motor Control encourages submission of papers from a variety of disciplines including, but not limited to, biomechanics, kinesiology, neurophysiology, neuroscience, psychology, physical medicine, and rehabilitation. This peer-reviewed journal publishes a wide variety of types of research papers including clinical experimental, modeling, and theoretical studies. To be considered for publication, papers should clearly demonstrate a contribution to the understanding of control of movement. In addition to publishing research papers, Motor Control publishes review articles, quick communications, commentaries, target articles, and book reviews. When warranted, an entire issue may be devoted to a specific topic within the area of motor control.