Miller Jeff, Gerstner Natascha
Department of Psychology, University of Otago, Dunedin, New Zealand.
Department of Psychology, University of Würzburg, Würzburg, Germany.
Psychophysiology. 2013 Oct;50(10):983-95. doi: 10.1111/psyp.12088. Epub 2013 Jul 12.
The motor processes involved in generating simultaneous hand and foot movements were studied by recording event-related potentials (ERPs) during reaction time tasks in which participants made hand and foot movements either alone or in combination with one another. In particular, we assessed whether the motor potentials generated during combined movements were simply superpositions of the potentials generated during the individual movements in isolation. ERPs generated during single-limb movements replicated previously observed motor potentials, and those generated during both the execution (Experiment 1) and preparation (Experiment 2) of combined movements showed some deviations from the predictions of the superposition hypothesis, suggesting the presence of neural interactions between the hand and foot movement systems during preparation and execution of these actions.
通过在反应时任务中记录事件相关电位（ERP），研究了产生同时的手部和足部运动所涉及的运动过程。在这些任务中，参与者单独或相互组合地进行手部和足部运动。具体而言，我们评估了在组合运动期间产生的运动电位是否仅仅是孤立的单个运动期间产生的电位的叠加。单肢运动期间产生的ERP复制了先前观察到的运动电位，而在组合运动的执行（实验1）和准备（实验2）期间产生的ERP显示出与叠加假设的预测存在一些偏差，这表明在这些动作的准备和执行过程中，手部和足部运动系统之间存在神经相互作用。
