Walsh E G
J Neurol Neurosurg Psychiatry. 1979 Jan;42(1):89-94. doi: 10.1136/jnnp.42.1.89.
Rhythmic forces have been applied to the wrist of patients with Parkinsonism tremor by means of a printed motor. The tremor rate was not altered to that of the applied force. On the contrary, beats were established, the rate of which depended on the difference in rate between the tremor and the applied rhythm. Most of the observations have been for horizontal motion of the hand but similar phenomena have been seen for vertical movements, and for other parts of the body--for example, foot, elbow, finger joint, and head. The observations are regarded as supporting the view that the tremorgenic mechanism is central. There was no electromyographic evidence of servo driving or servo assistance in the genesis of the tremor.
已通过印刷电机向患有帕金森震颤的患者手腕施加有节奏的力。震颤频率并未改变为所施加力的频率。相反，出现了节拍，其频率取决于震颤频率与所施加节奏频率之间的差异。大多数观察是针对手部的水平运动，但垂直运动以及身体的其他部位——例如脚、肘部、手指关节和头部——也观察到了类似现象。这些观察结果被认为支持震颤发生机制是中枢性的观点。在震颤发生过程中，没有肌电图证据表明存在伺服驱动或伺服辅助。
