Person R S
Neirofiziologiia. 1977;9(6):647-50.
The method of post-stimulus histograms of the single motor unit potentials permits the under-threshold facilitation to be revealed and the antidromic blocking of H-reflex to be avoided up to sub-maximal for M-response stimuli. The H-reflex was revealed only under abnormal conditions and was not observed in the noraml subjects. In the experiments the motoneurons responded to impulses from above, therefore the inhibition of the motoneurons itself cannot be a mechanism of the H-reflex inhibition. The alternative explanation is the presynaptic inhibition.
单运动单位电位的刺激后直方图方法能够揭示阈下易化，并在M反应刺激达到次最大强度之前避免H反射的逆向阻断。H反射仅在异常情况下出现，正常受试者中未观察到。在实验中，运动神经元对来自上方的冲动有反应，因此运动神经元自身的抑制不可能是H反射抑制的机制。另一种解释是突触前抑制。
