Benecke R, Dick J P, Rothwell J C, Day B L, Marsden C D
Neurosci Lett. 1985 Dec 18;62(3):347-52. doi: 10.1016/0304-3940(85)90573-7.
The amplitude and duration of the Bereitschaftspotential were analysed in 9 normal subjects prior to four different motor tasks: (1) simple isotonic elbow flexion ('flex'), (2) simple isometric finger flexion ('squeeze'), (3) simultaneous performance of 'flex' and 'squeeze', and (4) sequential performance of 'flex' then 'squeeze'. The Bereitschaftspotential was much larger and slightly longer in the simultaneous and sequential movements than in the same movements performed separately. The amplitudes of the Bereitschaftspotential were measured 150 and 75 ms prior to electromyographic (EMG) onset of the prime mover, and at the time of EMG onset. Changes in size were seen in all leads (FCz, Cz, C3', C4') and at all time points. It is suggested that the increase of the Bereitschaftspotential prior to complex arm movements reflects a greater activation of the supplementary motor area before simultaneous and sequential movements.
在9名正常受试者进行四项不同的运动任务之前，分析了 Bereitschaft 电位的幅度和持续时间：（1）简单的等张性肘部屈曲（“屈曲”），（2）简单的等长性手指屈曲（“挤压”），（3）同时进行“屈曲”和“挤压”，以及（4）依次进行“屈曲”然后“挤压”。与单独进行相同运动相比，同时和依次运动时的 Bereitschaft 电位要大得多，且略长。在主动肌肌电图（EMG）开始前150毫秒和75毫秒以及EMG开始时，测量了 Bereitschaft 电位的幅度。在所有导联（FCz、Cz、C3'、C4'）和所有时间点都观察到了大小变化。有人认为，复杂手臂运动之前 Bereitschaft 电位的增加反映了在同时和依次运动之前辅助运动区的更大激活。
