Williams I R, Hayward M
J Neurol Neurosurg Psychiatry. 1981 Nov;44(11):1040-5. doi: 10.1136/jnnp.44.11.1040.
The effect of afferent stimuli on the firing pattern of single motor units has been studied in the human first dorsal interosseous muscle of the hand. A reproducible series of changes in the probability of motor unit firing was seen. There was evidence for an excitatory spinal reflex involving median nerve muscle afferent fibres and ulnar nerve motor fibres. Cutaneous and muscle afferent pathways expected to be important in the control of fine movement of the first digit produced an excitatory reflex response at about 70 ms. All sites stimulated in the ipsilateral limb gave rise to a profound reduction in motor unit firing from about 70-130 ms.
在手的第一背侧骨间肌中,已经研究了传入刺激对单个运动单位放电模式的影响。观察到运动单位放电概率有一系列可重复的变化。有证据表明存在一种涉及正中神经肌肉传入纤维和尺神经运动纤维的兴奋性脊髓反射。预计在控制食指精细运动中起重要作用的皮肤和肌肉传入通路在约70毫秒时产生兴奋性反射反应。同侧肢体中所有受刺激部位在约70 - 130毫秒时都会导致运动单位放电显著减少。