Goh Hui-Ting, Campbell Stewart Jill, Becker Kevin, Hung Cheng-Ju
School of Physical Therapy, Texas Woman's University, Dallas, TX, USA.
Physical Therapy Program, Department of Exercise Science, University of South Carolina, Columbia, SC,USA.
Motor Control. 2022 Sep 27;27(2):194-216. doi: 10.1123/mc.2021-0136. Print 2023 Apr 1.
We previously showed that perceived effort during visually guided reaching was altered as task demand varied. Further, self-reported subjective fatigue correlated with perceived effort and reach performance under visually guided conditions. Memory-guided reaching often leads to performance deterioration and can provide insights about the planning and control of reach actions. It is unclear how perceived effort changes during memory-guided reaching and whether self-reported subjective fatigue is associated with perceived effort of memory-guided reaching. Twenty-three young adults performed reach actions under visually- and memory-guided conditions. Perceived effort, reaction time, and endpoint error increased significantly from the visually- to the memory-guided condition. Self-reported subjective fatigue was associated with perceived effort and reach distance error during memory-guided reaching; those with higher levels of fatigue reported greater perceived effort and tended to reach farther when visual information was not available. These findings establish a foundation to examine relationships between subjective fatigue, perceived effort, and reach control.
我们之前表明，在视觉引导的伸手动作过程中，随着任务需求的变化，感知到的努力程度也会改变。此外，自我报告的主观疲劳与视觉引导条件下的感知努力和伸手动作表现相关。记忆引导的伸手动作常常导致表现下降，并且能够提供有关伸手动作规划与控制的见解。目前尚不清楚在记忆引导的伸手动作过程中感知努力如何变化，以及自我报告的主观疲劳是否与记忆引导的伸手动作的感知努力相关。23名年轻成年人在视觉引导和记忆引导条件下进行伸手动作。从视觉引导条件到记忆引导条件，感知努力、反应时间和终点误差显著增加。自我报告的主观疲劳与记忆引导的伸手动作过程中的感知努力和伸手距离误差相关；疲劳程度较高的人报告的感知努力更大，并且在没有视觉信息时往往伸手更远。这些发现为研究主观疲劳、感知努力和伸手控制之间的关系奠定了基础。
