Central topography of anterior lateral line nerve projections in the channel catfish, Ictalurus punctatus.
Central topography of anterior lateral line nerve projections in the channel catfish, Ictalurus punctatus.
复制标题
斑点叉尾鮰前侧线神经投射的中央地形。
DOI：
10.1159/000113623
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Singh,S
中科院分区：
文献类型：
--
作者：
New,JG;Singh,S
鲶鱼的电感受可能是机械感觉侧线系统的一种特化。鲶鱼的前侧线神经纤维支配着头侧线系统的电感觉壶腹器官和机械感觉神经突。本研究的目的是确定ALLN主要分支的投影模式，并研究这些不同分支的终端场的不同核内的地形。前侧线神经的眼浅支、颊支和下颌下支的纤维在髓核和小脑核内以体位方式终止。这些纤维投射并终止于髓质和小脑中的几个离散核，特别是电感觉侧线叶，内侧和尾侧八侧核，以及小脑中称为突起颗粒核的核复合体的一部分。此外，髓质电感觉核的背腹侧躯体解剖与机械感觉核的背腹侧躯体解剖相反或“镜像”。这种反向映射与在其他电感觉系统中观察到的相似，并表明可能存在一种共同的机制来复制和保存空间信息，因为新系统是从原始感觉途径进化而来的。
Electroreception evolved in the catfishes probably as a specialization of the mechanosensory lateral line system. Fibers of the anterior lateral line nerve in catfishes innervate electrosensory ampullary organs and mechanosensory neuromasts of the head lateral line system. The purpose of this study is to determine the projection patterns of the major principal branches of the ALLN and to investigate the topography within the various nuclei of the terminal fields of these different branches. Fibers of the superficial ophthalmic, buccal and hyomandibular branches of the anterior lateral line nerve terminate in a somato-topic fashion within medullary and cerebellar nuclei. These fibers project to, and terminate within, several discrete nuclei in the medulla and cerebellum, notably the electrosensory lateral line lobe, the medial and caudal octavolateralis nuclei, and portions of a nuclear complex in the cerebellum called the eminentia granulans. Furthermore, the dorsoventral somatotopy in the medullary electrosensory nucleus is a reversed or ''mirror'' image of that in the mechanosensory nucleus. This reversed map is similar to that observed in other electrosensory systems and suggests that there may be a common mechanism for the copying and preservation of spatial information as new systems are evolved from primitive sensory pathways.