Ertekin C, Celebisoy N, Uludağ B
Department of Clinical Neurophysiology, Medical School Hospital, Ege University, Bornova, Izmir, Turkey.
J Neurol Sci. 1996 Nov;143(1-2):84-90. doi: 10.1016/s0022-510x(96)00124-4.
Trigemino-cervical reflexes, recorded from the semispinalis capitis muscle (SCM) in the posterior neck, were studied in 35 healthy volunteers, in response to electrical stimulation of the supraorbital trigeminal nerve and glabellar tapping. Simultaneous responses evoked from the ipsilateral orbicularis oculi muscle (OOM) were also recorded i.e. blink reflexes. Electrical stimulation of the supraorbital nerve elicited a reflex response with a latency of about 50 ms from the ipsilateral SCM which was called C3. An early reflex response, which sometimes had two components with latencies of 18 ms and 35 ms, was elicited with glabellar taps. They were called C1 and C2 respectively. When C1 and C2 were elicited with usual glabellar taps, C3 was suppressed. With electrical stimulation, suppression of C1 and C2 was noted, though C3 could easily be obtained. Electrophysiological characteristics of C1 (and C2) were compatible with an oligosynaptic, innocuous reflex, whereas C3 seemed to be multisynaptic and nociceptive in nature. A negative interaction between these two reflexes was observed.
在35名健康志愿者中，研究了从后颈部头半棘肌（SCM）记录的三叉神经 - 颈反射，以响应眶上三叉神经的电刺激和眉间轻叩。同时还记录了同侧眼轮匝肌（OOM）诱发的同步反应，即眨眼反射。眶上神经的电刺激从同侧SCM引出一个潜伏期约为50 ms的反射反应，称为C3。眉间轻叩引出一个早期反射反应，有时有两个成分，潜伏期分别为18 ms和35 ms，分别称为C1和C2。当用常规眉间轻叩引出C1和C2时，C3受到抑制。用电刺激时，虽然很容易引出C3，但可观察到C1和C2受到抑制。C1（和C2）的电生理特征与少突触、无害反射相符，而C3在性质上似乎是多突触且有伤害性的。观察到这两种反射之间存在负相互作用。
