Zupanc G K
Abteilung Physikalische Biologie, Max-Planck-Institut für Entwicklungsbiologie, Tübingen, Germany.
Brain Res. 1997 Jul 4;761(2):179-91. doi: 10.1016/s0006-8993(97)00130-3.
The preglomerular nucleus of teleost fishes, believed to be a lateral part of the posterior tuberculum in the diencephalon, receives input from several sensory areas. By employing an in vitro technique, the pattern of connectivity between this cell group and the telencephalon has been explored through retrograde and anterograde tracing in the gymnotiform fish Apteronotus leptorhynchus. Neurons of the preglomerular nucleus project to the following telencephalic areas: central division of dorsal forebrain, dorsal subdivision of dorsolateral telencephalon, posterior subdivision of dorsolateral telencephalon, dorsal posterior telencephalon, and probably, also subdivision 2 of dorsomedial telencephalon. Experiments in which tracer application was restricted to the lateral subdivision of the preglomerular nucleus, or in which tracer substance was placed into various regions of the telencephalon revealed a differential projection pattern of cells in the lateral and the medial subdivision of the preglomerular nucleus. Neurons in the central division of the dorsal forebrain, the dorsal posterior telencephalon, and likely, also in the subdivision 2 of the dorsomedial telencephalon and the ventricular zone of the intermediate subdivision of the ventral telencephalon project back to the preglomerular nucleus. Thus, a major function of the preglomerular nucleus appears to be to act as a relay station for conveying information between diencephalon and telencephalon.
硬骨鱼类的球前核被认为是间脑中后结节的外侧部分，它接收来自多个感觉区域的输入。通过采用体外技术，利用逆行和顺行追踪法，在裸背电鳗（Apteronotus leptorhynchus）中探索了该细胞群与端脑之间的连接模式。球前核的神经元投射到以下端脑区域：背侧前脑中央区、背外侧端脑背侧亚区、背外侧端脑后侧亚区、背侧后端脑，可能还有背内侧端脑的第2亚区。将示踪剂应用限制在球前核外侧亚区，或把示踪剂物质置于端脑不同区域的实验，揭示了球前核外侧和内侧亚区细胞的不同投射模式。背侧前脑中央区、背侧后端脑的神经元，可能还有背内侧端脑第2亚区和腹侧端脑中间亚区室带的神经元，会投射回球前核。因此，球前核的主要功能似乎是作为间脑和端脑之间传递信息的中继站。
