上运动神经元损伤患者H反射的增强受损。

Sica R E, McComas A J, Upton A R

J Neurol Neurosurg Psychiatry. 1971 Dec;34(6):712-7. doi: 10.1136/jnnp.34.6.712.

The potentiation of H-reflexes during effort has been studied in 16 patients with mild hemiparesis. Impaired potentiation was present in all but one patient, and was still evident in some who had recovered fully from weakness. A tentative explanation has been proposed for these findings; it is suggested that there is loss of a background facilitatory pathway to motoneurones.

对16例轻度偏瘫患者用力时H反射的增强情况进行了研究。除1例患者外，其余患者均存在增强受损的情况，并且在一些已从肌无力中完全恢复的患者中仍很明显。针对这些发现提出了一个初步解释；有人认为，运动神经元的一种背景易化通路丧失了。