Koelman J H, Bour L J, Hilgevoord A A, van Bruggen G J, Ongerboer de Visser B W
Department of Clinical Neurophysiology, Medical Centre, AZ-Amsterdam, The Netherlands.
J Neurol Neurosurg Psychiatry. 1993 Jul;56(7):776-81. doi: 10.1136/jnnp.56.7.776.
Soleus H-reflex tests are used for elucidating pathophysiological mechanisms in motor control. The cumulative vibratory inhibition of the soleus H-reflex, the ratio of the reflex to direct muscle potential (H to M ratio) and the recovery curve of the soleus H-reflex were studied in 38 patients with varying signs of the upper motor neuron syndrome for a possible relation with clinical features. The results were compared with those obtained from a group of healthy volunteers. The magnitude of vibratory inhibition decreased with increase of hypertonia. The H to M ratio increased as the activity of the tendon reflex was enhanced and correlated to a lesser degree with muscle tone. Both the H to M ratio and late facilitation of the soleus H-reflex recovery curve were elevated in clonus. The findings suggest that alterations in the results of soleus H-reflex tests relate to specific clinical features of the upper motor neuron syndrome. Possible pathophysiological implications are discussed.
比目鱼肌H反射测试用于阐明运动控制中的病理生理机制。对38例具有不同上运动神经元综合征体征的患者，研究了比目鱼肌H反射的累积振动抑制、反射与直接肌肉电位的比值（H/M比值）以及比目鱼肌H反射的恢复曲线，以探讨其与临床特征的可能关系。将结果与一组健康志愿者的结果进行比较。振动抑制的程度随张力亢进的增加而降低。H/M比值随腱反射活动增强而升高，与肌张力的相关性较小。阵挛时比目鱼肌H反射恢复曲线的H/M比值和晚期易化均升高。这些发现表明，比目鱼肌H反射测试结果的改变与上运动神经元综合征的特定临床特征有关。文中讨论了可能的病理生理意义。
