Hammel Neurorehabilitation Hospital and Research Center, Aarhus University, Hammel, Denmark.
Muscle Nerve. 2011 Jun;43(6):845-50. doi: 10.1002/mus.21964.
A conditioning volley to the ipsilateral tibial nerve (iTN) inhibits contralateral soleus (cSOL) electromyographic activity at latencies of 37-41 ms. This is evidence for spinal muscular communication in opposing limbs. The aim of our study was to determine whether the cSOL H-reflex would be inhibited in a similar manner.
Thirteen subjects participated in two experiments: (1) stimuli delivered to the iTN at 85% of the maximal peak-to-peak M-wave (85% M-max) with a pre-contracted cSOL; (2) 510 stimuli delivered at 85% M-max to the iTN with a test volley delivered to the contralateral tibial nerve at interstimulus intervals of -6 to 100 ms.
Significant inhibition was observed in the cSOL H-reflex when conditioning stimuli were delivered 3-33 ms before the test H-reflex.
The activity of this spinal pathway can be quantified using H-reflex conditioning to provide a controlled model for further studies of this response.
刺激同侧胫神经（iTN）可在 37-41ms 的潜伏期抑制对侧比目鱼肌（cSOL）的肌电图活动。这是对相反肢体脊髓肌肉通讯的证据。我们的研究目的是确定对侧 SOL H 反射是否会以类似的方式受到抑制。
13 名受试者参加了两项实验：（1）在预收缩的 cSOL 上，用 85%的最大峰峰值 M 波（85% M-max）刺激 iTN；（2）用 85% M-max 刺激 iTN 510 次，同时在刺激间隔为-6 至 100ms 时向对侧胫神经发送测试冲动。
当测试 H 反射前 3-33ms 时，cSOL H 反射明显受到抑制。
可以使用 H 反射刺激来定量评估该脊髓通路的活动，为进一步研究该反应提供一个可控的模型。
