The contribution of central factors to movement preparation (e.g., the contingent negative variation [CNV]) and the influence of fatigue on such factors are still unclear, even though executive cognitive functions are regarded as key elements in motor control. Therefore, this study examined CNV amplitude with electroencephalography in 22 healthy humans during a rapid arm movement task prior to and following three experimental conditions: (a) a no exertion/control condition, (b) a physical exertion, and (c) a cognitive exertion. CNV amplitude was affected neither by a single bout of physical/cognitive exertion nor by the control condition. Furthermore, no time-on-task effects of the rapid arm movement task on the CNV were found. Exertion did not affect cortical movement preparation, which is in contrast to previous findings regarding time-on-task effects of exertion on CNV. Based on the current findings, the rapid arm movement task is deemed suitable to measure cortical movement preparation, without being affected by learning effects and physical/cognitive exertion.

尽管执行力认知功能被认为是运动控制的关键要素，但运动准备的中心因素（例如，偶然负变化[CNV]）的影响以及疲劳对这些因素的影响仍不清楚。因此，本研究在以下三个实验条件之前和之后的快速手臂运动任务中，通过脑电图检查了22名健康人的CNV振幅：（a）无运动/控制状态；（b）体力活动；（c）认知活动用力。CNV振幅既不受一连串的身体/认知活动的影响，也不受控制条件的影响。此外，没有发现快速手臂运动任务对CNV的任务时间影响。劳累并没有影响皮层运动的准备，这与先前关于工作对CNV的工作时间影响的发现相反。根据当前的发现，快速手臂运动任务被认为适合测量皮层运动的准备，而不受学习效果和身体/认知活动的影响。