Shohara E, Sakai A
Exp Neurol. 1983 Jul;81(1):14-33. doi: 10.1016/0014-4886(83)90154-1.
In the rat, distribution of the motoneurons supplying the deep facial muscles (DFM)--the posterior belly of the digastric (VP) and the stylohyoid (SH) muscles--and the superficial facial muscles (SFM) was studied using the horseradish peroxidase (HRP) method and the antidromic field-potential method. The HRP was injected individually into the VP or SH or applied directly to the central end of the facial nerve cut immediately before it enters the parotid gland. Electrical stimulation was administered to the common stem of the branches innervating the VP or SH and to the facial nerve trunk just before entering the parotid gland. Both VP and SH motoneurons were found not in the main but in the accessory facial nucleus, within which the VP motoneurons were more numerous and more dorsorostrally extended than were the SH motoneurons. Motoneurons supplying the SFM were confined within the main facial nucleus. Evidence was found that the distribution of antidromic field potentials evoked by stimulation at the above sites coincided with the distribution of motoneurons supplying either the DFM or SFM obtained from the HRP experiment. In the rat, the accessory and main facial nuclei can be considered to be the mass of motoneurons exclusively innervating the DFM and SFM, respectively.
利用辣根过氧化物酶（HRP）法和逆向场电位法，研究了大鼠中支配深部面肌（DFM）——二腹肌后腹（VP）和茎突舌骨肌（SH）——以及浅部面肌（SFM）的运动神经元的分布。将HRP分别注入VP或SH，或直接应用于面神经在即将进入腮腺之前切断的中枢端。对面神经支配VP或SH的分支的共同干以及即将进入腮腺之前的面神经干进行电刺激。发现VP和SH运动神经元均不在主面神经核，而是在副面神经核中，其中VP运动神经元比SH运动神经元数量更多，且在背侧更靠前延伸。支配SFM的运动神经元局限于主面神经核内。有证据表明，在上述部位刺激所诱发的逆向场电位的分布与从HRP实验中获得的支配DFM或SFM的运动神经元的分布一致。在大鼠中，副面神经核和主面神经核可分别被视为专门支配DFM和SFM的运动神经元团。
