Pfurtscheller G, Neuper C
Ludwig Boltzmann-Institute of Medical Informatics and Neuroinformatics, Graz University of Technology, Austria.
Neuroreport. 1992 Dec;3(12):1057-60. doi: 10.1097/00001756-199212000-00006.
Nineteen-channel EEG was recorded with closely spaced electrodes overlaying the left sensorimotor cortex during self-paced, voluntary right finger movements. Three right-handed people served as subjects. The EEG was analysed in the 10 Hz band (10-12 Hz) and in four 40 Hz bands (34-36, 36-38, 38-40, 40-42) by calculation of ERD time courses and ERD maps, whereby a ERD is characterized by a movement-related band power decrease. In all three subjects a close to C3 localized 10 Hz ERD was found, starting about 2 s prior to movement onset and continuing during movement. Along with this 10 Hz ERD a localized and short-lasting (about 0.5 s) burst of 40 Hz oscillations was embedded around movement onset. This can be interpreted as indicating that planning of movement is accompanied by a desynchronization of central mu rhythm and a generation of 40 Hz oscillations.
在自定节奏的自主右手手指运动过程中，使用紧密间隔的电极覆盖左感觉运动皮层记录19通道脑电图。三名右利手者作为受试者。通过计算事件相关去同步化（ERD）时间进程和ERD图，在10赫兹频段（10 - 12赫兹）和四个40赫兹频段（34 - 36、36 - 38、38 - 40、40 - 42）对脑电图进行分析，其中ERD的特征是与运动相关的频段功率降低。在所有三名受试者中，均发现了一个接近C3定位的10赫兹ERD，在运动开始前约2秒开始，并在运动过程中持续。伴随着这个10赫兹ERD，在运动开始时周围嵌入了一个局部且短暂（约0.5秒）的40赫兹振荡爆发。这可以解释为表明运动规划伴随着中央μ节律的去同步化和40赫兹振荡的产生。
