Gottlieb G L, Agarwal G C
Electroencephalogr Clin Neurophysiol. 1978 May;44(5):553-61. doi: 10.1016/0013-4694(78)90122-0.
Measurements were made of EMG responses in human soleus muscle, following torque disturbances of the foot during phasic voluntary plantarflexions. These were compared with measurements of the Hoffmann reflex during identical voluntary movements. We observe that stretch adequate to evoke a stretch reflex in the relaxed limb often fails to evoke any response during a phasic contraction until about 120 msec after the onset of the stimulus. During this period the H-reflex is facilitated. These findings are discussed in terms of the servo-theory of stretch reflex function and the concept of trans-cortical stretch reflexes.
在人类比目鱼肌进行了肌电图（EMG）反应测量，测量是在相性随意跖屈过程中足部受到扭矩干扰之后进行的。将这些测量结果与相同随意运动期间的霍夫曼反射测量结果进行了比较。我们观察到，在放松肢体中足以诱发牵张反射的牵张，在相性收缩期间通常直到刺激开始后约120毫秒都未能诱发任何反应。在此期间，H反射得到易化。根据牵张反射功能的伺服理论和皮质牵张反射的概念对这些发现进行了讨论。
