Schütz Christoph
Faculty of Psychology and Sports Science, Bielefeld University, Bielefeld, Germany.
Center for Cognitive Interaction Technology, Bielefeld University, Bielefeld, Germany.
Front Psychol. 2025 Feb 25;16:1423408. doi: 10.3389/fpsyg.2025.1423408. eCollection 2025.
In a sequential posture selection task, we reuse former motor plans to reduce cognitive planning cost. The resulting persistence in the former posture, termed motor hysteresis, can serve as a proxy for the percentage of motor plan reuse (PoR). A recent study showed a significant drop in PoR if participants were asked to skip every second drawer in a sequential drawer opening task. In the current study, we sought to disentangle four confounded factors that were potentially responsible for this drop in PoR: a change of (1) spatial distance, (2) digit distance, (3) number of drawers, or (4) context (presence of skipped drawers). To this end, two groups of participants were tested in a series of sequential drawer tasks, where each of the four potential influencing factors was varied independently. PoR was calculated as the dependent variable. Participants displayed a hysteresis effect in all ordered tasks, but the PoR was only reduced by an increase in spatial distance. The three remaining factors had no significant effect. This finding indicates that motor planning is only affected by local (spatial) parameters of the task, but not by context factors (digits, skipped drawers) or global parameters such as the number of drawers.
在一个连续姿势选择任务中，我们重新利用先前的运动计划以降低认知规划成本。在先前姿势中产生的持续性，即所谓的运动滞后，可以作为运动计划重用百分比（PoR）的一个替代指标。最近的一项研究表明，如果要求参与者在连续打开抽屉任务中每隔一个抽屉跳过一次，PoR会显著下降。在当前的研究中，我们试图厘清可能导致PoR下降的四个混淆因素：（1）空间距离、（2）数字距离、（3）抽屉数量或（4）情境（是否存在跳过的抽屉）的变化。为此，两组参与者在一系列连续抽屉任务中接受测试，其中四个潜在影响因素中的每一个都独立变化。PoR作为因变量进行计算。参与者在所有有序任务中都表现出滞后效应，但PoR仅因空间距离的增加而降低。其余三个因素没有显著影响。这一发现表明，运动规划仅受任务的局部（空间）参数影响，而不受情境因素（数字、跳过的抽屉）或诸如抽屉数量等全局参数的影响。
