Laboratory of Sports Sciences, Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan.
Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan.
Sci Rep. 2021 Nov 18;11(1):22492. doi: 10.1038/s41598-021-01777-3.
In goal-directed behavior, individuals are often required to plan and execute a movement with multiple competing reach targets simultaneously. The time constraint assigned to the target is an important factor that affect the initial movement planning, but the adjustments made to the starting behavior considering the time constraints specific to each target have not yet been clarified. The current study examined how humans adjusted their motor planning for double potential targets with independent time constraints under a go-before-you-know situation. The results revealed that the initial movements were modulated depending on the time constraints for potential targets. However, under tight time constraints, the performance in the double-target condition was lower than the single-target condition, which was a control condition implemented to estimate performance when one target is ignored. These results indicate that the initial movement for multiple potential targets with independent time constraints can be modified, but the planning is suboptimal.
在目标导向行为中，个体通常需要同时规划和执行多个具有竞争关系的到达目标的运动。分配给目标的时间限制是影响初始运动规划的一个重要因素，但对于每个目标的特定时间限制所做的起始行为调整尚未阐明。本研究考察了人类在未知情况下如何调整其对具有独立时间限制的双潜在目标的运动规划。结果表明，初始运动取决于潜在目标的时间限制。然而，在时间限制紧张的情况下，双目标条件下的表现低于单目标条件，后者是实施的一种控制条件，用于估计忽略一个目标时的表现。这些结果表明，具有独立时间限制的多个潜在目标的初始运动可以进行修改，但规划是次优的。
