Rogers M W, Kukulka C G, Soderberg G L
Neurosci Lett. 1987 Mar 31;75(2):246-51. doi: 10.1016/0304-3940(87)90305-3.
The electromyographic (EMG) responses in postural (thigh and trunk) and agonist (shoulder) muscles were examined in standing parkinsonian subjects and healthy controls prior to visual reaction time and self-paced rapid arm flexion movements. Recruitment of postural muscles typically preceded arm displacement in normals, but was less frequent, of shorter duration, and characterized by multiple EMG bursts which extended to the agonist in parkinsonians. Moreover, parallel delays in EMG recruitment times relative to the visual signal for both postural and agonist muscles were observed in akinetic patients. These abnormalities suggest that the basal ganglia may serve a preparatory motor function, by linking synergistic muscles through a common selection process.
在帕金森病患者和健康对照者站立时，于视觉反应时间和自定步速的快速手臂屈曲运动之前，对姿势（大腿和躯干）肌肉和主动肌（肩部）的肌电图（EMG）反应进行了检查。在正常人中，姿势肌肉的募集通常先于手臂移动，但在帕金森病患者中，这种情况较少见，持续时间较短，且其特征是多个EMG爆发并延伸至主动肌。此外，在运动不能的患者中，观察到姿势肌和主动肌的EMG募集时间相对于视觉信号均存在平行延迟。这些异常表明，基底神经节可能通过一个共同的选择过程连接协同肌肉，从而发挥一种运动准备功能。
