Lannoo M J, Maler L, Zakon H
Department of Anatomy, University of Ottawa, Ont., Canada.
Neurosci Lett. 1989 Feb 13;97(1-2):11-7. doi: 10.1016/0304-3940(89)90131-6.
The supraorbital (SO) nerve branch of some weakly electric teleosts innervates electroreceptors on the entire rostral snout and therefore excludes the infraorbital (IO) branch. A ventral twig of SO innervates the ventral snout (normally IO territory) and projects into the electroreceptive lateral line lobe in an IO pattern. This suggests that afferents to adjacent snout receptors can take widely divergent pathways (different nerve branches) to the electrosensory lateral line lobe (ELL) yet retain somatotopy centrally. We conclude: (1) that there is intrabranch somatotopy within these nerves, and (2) that receptor position, not nerve branch, determines ELL somatotopy.
一些弱电硬骨鱼的眶上（SO）神经分支支配整个吻部前端的电感受器，因此不包括眶下（IO）分支。SO的一个腹侧小分支支配吻部腹侧（通常是IO的区域），并以IO模式投射到电感受侧线叶。这表明相邻吻部感受器的传入神经可以通过广泛不同的途径（不同的神经分支）到达电感觉侧线叶（ELL），但在中枢仍保留躯体定位。我们得出结论：（1）这些神经内存在分支内躯体定位，（2）感受器位置而非神经分支决定ELL躯体定位。
