视觉空间认知预测了老年人的视觉障碍步行任务的表现
Steven P Winesett1, Sudeshna A Chatterjee2, Brianne Borgia3
1Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, Gainesville, FL, USA; Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA.
Experimental gerontology
|March 15, 2024
概括
阻碍视力障碍 (OBVIO) 任务有效地测量了老年人行走期间的认知控制. 这种新方法挑战了注意力和记忆力,对步行速度和障碍物导航产生了重大影响.
科学领域:
- 老年学是指老年学的学科.
- 神经科学是一个神经科学.
- 生物力学 生物力学
背景情况:
- 老年人的步行表现和认知功能随着年龄的增长而下降.
- 在复杂的环境中行走需要大量的认知资源,特别是注意力和工作记忆.
- 现有的双任务步行评估在任务难度扩展和优先级控制方面存在局限性.
研究的目的:
- 引入和验证视障碍障碍 (OBVIO) 任务,作为步行认知控制的新型评估.
- 评估OBVIO任务在没有双任务方法的缺点的情况下挑战认知资源的能力.
- 为了确定健康的老年人中OBVIO任务的可行性和有效性.
主要方法:
- 参与者 (n=74,健康的老年人) 执行了OBVIO任务,包括在视力受阻的情况下跨越障碍物.
- 在OBVIO任务中,参与者需要记住障碍物位置,而在10米步行道上导航.
- 记录了步行速度和障碍物撞击,OBVIO表现与认知评估相关.
主要成果:
- 这项OBVIO任务显著降低了步行速度的0.26米/秒,并增加了障碍物撞击的8倍.
- 在OBVIO任务表现中,与视觉空间工作记忆,注意力和口头工作记忆有显著的相关性.
- 在健康的老年人中,OBVIO任务被证明是可行的,并且要求认知资源.
结论:
- OBVIO任务是一个有前途的新评估,用于评估老年人走路的认知控制.
- 这项任务有效地挑战了运动期间注意力和工作记忆等认知资源.
- 该OBVIO任务为未来的认知运动评估和干预研究提供了基础.
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