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走在木板上 (和说话):在虚拟平衡威胁的环境中,双重任务的性能成本
Tiphanie E Raffegeau1,2, Sarah A Brinkerhoff3, Mindie Clark4,5
1George Mason University, School of Kinesiology, 10890 George Mason Circle, Katherine Johnson Hall 201G, MSN 4E5, Manassas, VA, 20110, USA. traffege@gmu.edu.
Experimental brain research
|March 27, 2024
概括
在虚拟现实中行走时进行即兴演讲,可以减少对虚拟高度的焦虑和分心. 这种双重任务可能会减轻与流动性相关的焦虑对步行的负面影响.
科学领域:
- 人类运动和认知神经科学.
- 在行为研究中的虚拟现实应用.
- 焦虑及其对运动控制的影响
背景情况:
- 与流动性相关的焦虑,通常是由虚拟升高等平衡威胁引发的,可能会损害行走.
- 双重任务,例如在走路时说话,通常会增加认知负载并影响步态.
- 焦虑,虚拟环境和双重任务之间的相互作用尚未完全理解.
研究的目的:
- 为了研究即兴语音 (双任务) 对健康成年人的步态的影响,在虚拟现实 (VR) 环境中模拟低高度和高高度.
- 检查虚拟身高诱导的与移动性相关的焦虑如何影响行走行为和在讲话时的认知成本.
主要方法:
- 15名健康成年人在虚拟现实环境中行走,模拟地面和15米高.
- 参与者执行了单任务 (仅行走) 和双任务 (走路而随时说话) 条件.
- 分析了步行参数 (速度,步长,步宽,可变性) 和静音语音暂停. 焦虑,自信和精神上的努力都是自我报告的.
主要成果:
- 虚拟的高度 (平衡威胁) 和即兴的演讲都独立地扰乱了步态动力学.
- 虚拟身高增加了焦虑和精神上的努力,同时降低了信心.
- 随机发言增加了沉默的语音暂停,表明认知成本,但没有发现与虚拟身高的相互作用.
结论:
- 虚拟身高和并发的语音任务独立地显著影响步态.
- 随机发言可能会分散个人的注意力,可能会减轻虚拟环境中与流动性相关的焦虑的负面影响.
- 未来的研究应该探索引起焦虑的移动任务中这种分心效应背后的注意力机制.
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