Brunia C H, Vingerhoets A J
Biol Psychol. 1980 Nov-Dec;11(3-4):181-91. doi: 10.1016/0301-0511(80)90054-x.
In 25 subjects CNV and EMG were recorded during a reaction time experiment with a fixed 4 sec foreperiod. The response was plantar flexion of the right foot. EEGs were recorded with four electrodes from the central area, two over each hemisphere. CNV amplitudes were larger over the ipsilateral than over the contralateral hemisphere. Amplitudes were smaller in the more lateral derivations. The late component of the CNV showed larger amplitudes when preceding relatively fast responses. EMG activity was recorded from the calf muscles of both legs. In the left leg it was not different during the intertrial interval and the foreperiod. A small but systematic increase in EMG activity was found during the foreperiod in the right leg. The increase was larger preceding fast responses, parallel to the amplitude changes in CNV late waves.
在一项反应时实验中，对25名受试者在固定的4秒预备期内记录了CNV（关联性负变）和肌电图（EMG）。反应为右脚跖屈。使用四个电极从中央区域记录脑电图，每个半球上方各两个。CNV振幅在同侧半球比在对侧半球更大。在更外侧的导联中振幅较小。当CNV之前出现相对快速的反应时，其晚期成分显示出更大的振幅。从双腿的小腿肌肉记录肌电图活动。在左腿，在试验间期和预备期内没有差异。在右腿的预备期内发现肌电图活动有小但系统性的增加。在快速反应之前增加更大，与CNV晚期波的振幅变化平行。
