Bouaziz Z, Bouaziz M, Hugon M
Arch Inst Pasteur Tunis. 1984 Dec;61(4):435-45.
Electrical stimulation of femoral nerve modulates voluntary tonic activity o of ipsilateral soleus muscle. Stimulus time-locked inhibitory and facilitatory phases can be distinguished. EMG temporal analysis suggests that early perturbations are correlated with spinal effects of centripetal electrical activity. The inhibitory effects which momentarily abolish voluntary soleus activity are thought to result from quadriceps Ib fibres recruitment. While no heteronymous activity is induced at rest, femoral nerve Ia fibres activation can produce soleus muscle reflex when soleus motor nucleus excitability is increased by voluntary command. Recurrent discharge resulting from soleus reflex response enhances inhibition initially due to quadriceps Ib volley. Secondary effects of isometric quadriceps contraction (and soleus contraction when the femoral stimulus elicits a reflex in this muscle) have their own effects later. These findings suggest that proprioceptive relationships of the two muscular groups are efficient during tonic isometric voluntary command.
股神经电刺激可调节同侧比目鱼肌的随意强直活动。可以区分刺激时间锁定的抑制期和易化期。肌电图的时间分析表明，早期干扰与向心性电活动的脊髓效应相关。瞬间消除比目鱼肌随意活动的抑制作用被认为是由于股四头肌Ib纤维的募集。虽然在静息时不会诱发异源性活动，但当比目鱼肌运动核兴奋性通过随意指令增加时，股神经Ia纤维的激活可产生比目鱼肌反射。比目鱼肌反射反应产生的反复放电最初由于股四头肌Ib群放电而增强抑制作用。等长股四头肌收缩（以及当股神经刺激在该肌肉中引发反射时的比目鱼肌收缩）的继发效应随后会产生自身影响。这些发现表明，在强直等长随意指令期间，两个肌肉群的本体感受关系是有效的。
