青壮年在注意力高度集中的条件下躲避以 45°角靠近的虚拟行人时的防撞行为

IF 1.6 3区 心理学 Q4 NEUROSCIENCES Human Movement Science Pub Date : 2024-05-09 DOI:10.1016/j.humov.2024.103226
Brooke J. Thompson, Michael E. Cinelli
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引用次数: 0

摘要

人依靠视觉信息来决定何时调整自己的行为(即改变路径和/或速度),以避开接近的物体或人。启动避让行为后,个体可能会控制自己与另一个人或物体之间的空间(即最小间隙距离)。本研究旨在通过一项需要注意力高度集中的任务,确定青少年在躲避沿 45° 角靠近的虚拟行人时的行动策略。21 名年轻成年人(22.9 ± 1.9 岁,11 名男性)沉浸在虚拟环境中,并被要求沿着一条 7.5 米长的路径朝位于中线的目标行走。两个虚拟行人(VP)分别位于中线左右两侧 2.83 米处,以 45° 角向参与者靠近。在不同的试验中,为了操纵参与者与虚拟行人的相交点,虚拟行人以三种速度之一接近参与者:每个参与者的平均步行速度分别为 0.8 倍、1.0 倍或 1.2 倍。参与者被要求在不与虚拟人物相撞的情况下走向目标,同时执行注意任务;报告虚拟人物头顶上方的形状是否发生变化。结果显示,青壮年并没有根据虚拟人物的接近特征来调整他们的回避时间,因为他们一直在虚拟人物开始移动 1.67 秒后才回避碰撞。然而,青壮年似乎可以通过在避让行为开始后保持一致的安全系数来控制他们如何避开迎面而来的碰撞。
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Collision avoidance behaviours while young adults avoid a virtual pedestrian approaching on a 45° angle under attentionally demanding conditions

Individuals rely on visual information to determine when to adapt their behaviours (i.e., by changing path and/or speed) to avoid an approaching object or person. After initiating an avoidance behaviour, individuals may control the space (i.e., minimum clearance distance) between themselves and another person or object. The current study aimed to determine the action strategies of young adults while avoiding a virtual pedestrian approaching along a 45° angle in an attentionally demanding task. Twenty-one young adults (22.9 ± 1.9 yrs., 11 males) were immersed in a virtual environment and were instructed to walk along a 7.5 m path towards a goal located along the midline. Two virtual pedestrians (VP) positioned 2.83 m to the left and right of the midline approached participants on a 45° angle. To manipulate the point at which the participants and the VP would intersect during different trials, the VP approached at one of three speeds: 0.8×, 1.0×, or 1.2× each participants' average walking speed. Participants were instructed to walk to a goal without colliding with the VP while performing the attention task; reporting whether a shape changed above the VPs' heads. Results revealed that young adults did not modulate their timing of avoidance to the approach characteristics of the VP, as they consistently avoided the collision 1.67 s after the VP began moving. However, young adults seem to control how they avoid an oncoming collision by maintaining a consistent safety margin after an avoidance behaviour was initiated.

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来源期刊
Human Movement Science
Human Movement Science 医学-神经科学
CiteScore
3.80
自引率
4.80%
发文量
89
审稿时长
42 days
期刊介绍: Human Movement Science provides a medium for publishing disciplinary and multidisciplinary studies on human movement. It brings together psychological, biomechanical and neurophysiological research on the control, organization and learning of human movement, including the perceptual support of movement. The overarching goal of the journal is to publish articles that help advance theoretical understanding of the control and organization of human movement, as well as changes therein as a function of development, learning and rehabilitation. The nature of the research reported may vary from fundamental theoretical or empirical studies to more applied studies in the fields of, for example, sport, dance and rehabilitation with the proviso that all studies have a distinct theoretical bearing. Also, reviews and meta-studies advancing the understanding of human movement are welcome. These aims and scope imply that purely descriptive studies are not acceptable, while methodological articles are only acceptable if the methodology in question opens up new vistas in understanding the control and organization of human movement. The same holds for articles on exercise physiology, which in general are not supported, unless they speak to the control and organization of human movement. In general, it is required that the theoretical message of articles published in Human Movement Science is, to a certain extent, innovative and not dismissible as just "more of the same."
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