PARKINSONIAN BRADYKINESIA IS DUE TO DEPRESSION IN THE RATE OF RISE OF MUSCLE-ACTIVITY
PARKINSONIAN BRADYKINESIA IS DUE TO DEPRESSION IN THE RATE OF RISE OF MUSCLE-ACTIVITY
复制标题
DOI：
10.1002/ana.410310117
复制
发表时间：
1992-01-01
影响因子：
11.2
通讯作者：
JACQUY, J
中科院分区：
文献类型：
--
作者：
GODAUX, E;KOULISCHER, D;JACQUY, J
帕金森运动迟缓症的定义是运动执行缓慢。我们研究了在反应时间任务中对视觉目标进行快速手臂伸展运动时这种症状的病理生理学。运动迟缓的主要原因是肌电活动的上升速度下降。该活动的峰值幅度没有明显变化。在肌肉的顺序激活、共同收缩活动的数量、瞄准视觉目标的准确性和运动轨迹方面都没有变化。
Parkinsonian bradykinesia is defined by a slowness in the execution of movement. We studied the pathophysiology of this symptom in rapid arm-reaching movements to a visual target carried out in a reaction-time task. The major cause of bradykinesia was found to be depression in the rate of rise of electromyographic activity. The amplitude of the peak of this activity did not change significantly. There was no change either in the sequential activation of muscles, in the amount of co-contraction activity, in the accuracy of aim toward the visual target, or in the movement trajectory.