Leutgeb S, Husband S, Riters L V, Shimizu T, Bingman V P
Bowling Green State University, Department of Psychology, OH 43403, USA.
Brain Res. 1996 Aug 19;730(1-2):173-81. doi: 10.1016/0006-8993(96)00444-1.
The pigeon caudolateral neostriatum (NCL) shares a dopaminergic innervation with mammalian frontal cortical areas and is implicated in the regulation of avian cognitive behavior. Retrograde tracing methods were used to identify forebrain projections to NCL and to suggest a possible role of this area in mediating spatial behavior. NCL receives telencephalic projections from the hyperstriatum accessorium, cells along the border of hyperstriatum dorsale and hyperstriatum ventrale, anterolateral hyperstriatum adjacent to the vallecula, confined cell groups within the anterior neostriatum, and subdivisions of the archistriatum. In addition, labeling of a small number of large cells near the fasciculus prosencephali lateralis was observed at the level of the anterior commissure. In accordance with previous studies, projections of subtelencephalic areas were revealed to originate from the thalamic posterior dorsolateral nucleus and nucleus subrotundus, as well as from the tegmental nucleus pedunculopontinus and locus coeruleus. Forebrain connections of NCL show that somatosensory, visual, and olfactory information can combine in this division of the neostriatum. NCL is therefore suited to participate in a neural circuit that regulates spatial behavior. Moreover, the present study reveals that NCL is reached by a limbic projection from the nucleus taeniae. This projection also suggests similarity between NCL and mammalian frontal cortical areas.
鸽子的尾外侧新纹状体（NCL）与哺乳动物的额叶皮质区域共享多巴胺能神经支配，并参与鸟类认知行为的调节。逆行追踪方法被用于识别前脑向NCL的投射，并提示该区域在介导空间行为中的可能作用。NCL接受来自副高纹状体、背侧高纹状体和腹侧高纹状体边界处的细胞、与脑沟相邻的前外侧高纹状体、前新纹状体内的局限细胞群以及古纹状体亚区的端脑投射。此外，在前连合水平观察到少量位于外侧前脑束附近的大细胞被标记。与先前的研究一致，发现脑下区域的投射起源于丘脑后背外侧核和亚圆形核，以及脚桥被盖核和蓝斑。NCL的前脑连接表明，躯体感觉、视觉和嗅觉信息可以在新纹状体的这一区域整合。因此，NCL适合参与调节空间行为的神经回路。此外，本研究表明，NCL接受来自带状核的边缘投射。这一投射也提示了NCL与哺乳动物额叶皮质区域之间的相似性。
