Department of Special Education and Counselling, The Hong Kong Institute of Education, Hong Kong, China.
Department of Electronic Engineering, City University of Hong Kong, Hong Kong, China.
Int J Psychophysiol. 2014 Jan;91(1):16-21. doi: 10.1016/j.ijpsycho.2013.09.004. Epub 2013 Oct 2.
This study investigates the modulation of frontal EEG dynamics with respect to progress in motor skill acquisition using a wireless EEG system with a single dry sensor. Participants were required to complete repeated trials of a computerized visual-motor task similar to mirror drawing while the EEG was collected. In each trial, task performance of the participants was summarized with a familiarity index which took into account the performance accuracy, completion rate and time. Our findings demonstrated that certain EEG power spectra decreased with an increase in motor task familiarity. In particular, frontal EEG activities in delta and theta bands of the whole trial and in gamma band in the middle of the trial are having a significant negative relationship with the overall familiarity level of the task. The findings suggest that frontal EEG spectra are significantly modulated during motor skill acquisition. Results of this study shed light on the possibility of simultaneous monitoring of brain activity during an unconstrained natural task with a single dry sensor mobile EEG in an everyday environment.
本研究使用带有单个干传感器的无线 EEG 系统，调查了在运动技能习得过程中，额叶 EEG 动力学的调制。参与者被要求在 EEG 采集的同时，重复完成类似于镜像绘图的计算机化视觉运动任务。在每次试验中，都使用熟悉度指数来总结参与者的任务表现，该指数考虑了性能准确性、完成率和时间。我们的发现表明，某些 EEG 频谱随着运动任务的熟悉度增加而降低。特别是，整个试验中的 delta 和 theta 波段以及试验中期的 gamma 波段的额叶 EEG 活动与任务的整体熟悉度水平呈显著负相关。研究结果表明，在运动技能习得过程中，额叶 EEG 频谱会发生显著的调制。这项研究的结果表明，在日常生活环境中，使用单个干传感器移动 EEG，可以在不受限制的自然任务中，对大脑活动进行同时监测。
