【摘要】 顶盖前下核/顶盖前间下核(Nucleus subpre-tectalis/nucleus interstito-pretectalis-subpretectalis,SP/IPS核)向圆核的投射是鸟类视觉信息传导通路的一个重要组成部分。本试验使用羰花青荧光染料DiI逆向神经标记技术研究了这些投射向圆核的SP/IPS细胞(S细胞)的形态特征。根据树突的数量及分枝情况,标记出的S细胞可分为Ⅰ型细胞和Ⅱ型细胞,然后根据次级树突的数量又分别将这2种细胞分为简单型和复杂型2种。形态学测量表明,Ⅰ型细胞的胞体大小、面积均小于Ⅱ型细胞,其数目也略少。更多还原

【Abstract】 The projection from nucleus subpre-tectalis/nucleus interstito-pretectalis-subpretectalis(SP/IPS) to nucleus rotundus(Rt) is an important part of avian visual pathway.To reveal the morphological features of SP/IPS cells(S cells) which project to Rt,they were retrogradely labeled with cyanine perchlorate DiI in chicks.Two different types of neurons,"type Ⅰ cells" and "type Ⅱ cells" were identified.Based on the amount of the secondary dendrites,these cells were further divided into simple and complex cells,respectively.Morphological analysis indicated that the type I cells were smaller and fewer than type Ⅱcells.更多还原