Pfeifer Christina, Harenz Julia, Shea Charles H, Panzer Stefan
Saarland University, Im Stadtwald B8.2, D-66041 Saarbrücken, Germany.
Department of Health and Kinesiology, Texas A&M University, US.
J Cogn. 2021 Feb 4;4(1):12. doi: 10.5334/joc.128.
An experiment was designed to investigate the impact of a dual-task on the response structure of a 16-element movement sequence. The primary task was to move a lever to targets sequentially presented horizontally on the screen by elbow extension/flexion movements. The secondary task was a simple reaction time task triggered by moving the lever through targets at the middle and the end of the sequence. Participants were permitted to acquire the movement sequence on one day, and to perform the sequence on a second day under single-task and dual-task conditions. The results of the acquisition phase indicated that participants increased their performance over practice. Day 2 analysis indicated that performance of the repeated sequence was not deteriorated by the dual-task. This finding indicated that the response structure of the movement sequence performance was stable with regard to the secondary task. The current results are partially consistent with the theoretical assumption of an abstract representation for movement sequence execution.
设计了一项实验，以研究双重任务对16元素运动序列反应结构的影响。主要任务是通过肘部伸展/屈曲运动，将杠杆依次移动到屏幕上水平呈现的目标位置。次要任务是在序列中间和末尾移动杠杆通过目标时触发的简单反应时间任务。参与者被允许在一天内学习运动序列，并在第二天的单任务和双任务条件下执行该序列。习得阶段的结果表明，参与者通过练习提高了表现。第二天的分析表明，双重任务并未使重复序列的表现恶化。这一发现表明，运动序列表现的反应结构在次要任务方面是稳定的。目前的结果部分符合运动序列执行抽象表征的理论假设。
