【摘要】 果蝇的视觉系统是一个多层结构,外部由复眼组成,内部由神经板、脑髓神经节和视觉小叶复合体组成,其中视觉小叶复合体又包括视觉小叶和视觉小叶板两个神经节。光感受器细胞感知视觉信号,这种信号通过神经板、脑髓神经节、视觉小叶和视觉小叶板的加工处理最后到达中脑的各个部分。视叶的发育受到增殖和凋亡的影响。本文针对影响脑髓神经节成神经细胞分化的因素、脑髓神经节的时空模式、神经板的发育过程、胶质细胞对神经板的影响、转录因子对视觉小叶板发育的影响等方面的进展进行阐述。更多还原

【Abstract】 The visual system of Drosophila is a multi-layered structure consisting of a compound eye made from three ganglia of the optic lobes: lamina,medulla and lobula complex. The last part includes two ganglia,lobula and lobula plate. Photoreceptor cells perceive visual signals,which are processed through the lamina,medulla,lobula,and lobula plate,and finally reach various parts of the central brain. The development of optic lobes is affected by proliferation and apoptosis. This review focuses on the following topics: the generation of medulla,the factors affecting the differentiation of medulla into neurons,the temporal pattern of medulla,the development of lamina,the influence of glial cells on the lamina,and transcription factor on the lobula plate.更多还原