Dubbeldam J L, Brus E R, Menken S B, Zeilstra S
J Comp Neurol. 1979 Jan 1;183(1):149-68. doi: 10.1002/cne.901830111.
The central projections of the glossopharyngeal and vagus nerves in the mallard have been studied with the Fink-Heimer I method and are compared to those of the trigeminal and facial nerves. The N. vagus projects ipsilaterally and contralaterally upon the central nuclei of the solitary complex, except the most rostral part of it, upon the n. sulcalis dorsalis, the parasolitary nuclei and the n. commissuralis. The glossopharyngeal nerve contributes to the rostral pole of the n. centralis anterior and to the n. ventrolateralis anterior of the solitary complex, but it has also terminal fields in a cellgroup sIX of the principal sensory trigeminal nucleus, in a small cellgroup sIXd on the dorsum of the descending trigeminal tract, in the n. interpolaris of this tract and in nuclei of the cuneate complex. There is hardly any overlap of the respective terminal fields. The convergence of projections from N VII and N IX can be connected with the presence of tastebuds in upper and lower bill and in the soft palate. The converging projections from N V and N IX in "trigeminal" nuclei may reflect the functional coherence of the mechanoreceptors in bill and tongue. It is suggested that these nuclei play a role in the feeding behavior.
用芬克 - 海默尔I法研究了绿头鸭舌咽神经和迷走神经的中枢投射，并将其与三叉神经和面神经的中枢投射进行了比较。迷走神经除了最前端部分外，向孤束复合体的中枢核双侧投射，还投射到背侧沟神经、孤束旁核和连合神经。舌咽神经向孤束复合体的前中央核和前腹外侧核的前端投射，但在三叉神经主感觉核的细胞群IX、三叉神经降束背侧的小细胞群IXd、该束的极间核和楔束复合体的核中也有终末场。各终末场几乎没有重叠。面神经和舌咽神经投射的汇聚可能与上、下喙及软腭中味蕾的存在有关。三叉神经核中三叉神经和舌咽神经的汇聚投射可能反映了喙和舌中机械感受器的功能连贯性。提示这些核在摄食行为中起作用。
