Retinohypothalamic pathway in the duck (Anas platyrhynchos)
Retinohypothalamic pathway in the duck (Anas platyrhynchos)
复制标题
鸭（Anas platyrhynchos）的视网膜下丘脑通路
DOI：
10.1007/bf00215312
复制
发表时间：
1976
影响因子：
3.6
通讯作者：
Dr. N. Bons
中科院分区：
文献类型：
--
作者：
Dr. N. Bons
用光镜和电子显微镜技术研究了鸭单侧视神经切断后视网膜下丘脑的联系。仅在下丘脑前部，即对侧视交叉上核的腹侧，可见纤维终末变性。在冰冻切片中观察到简并的粒子图像(根据Johnstone-Bowsher的方法)，并通过电子显微镜检查证实了它们的存在。这些退化的突触与视交叉上核神经元的树突或树突棘发生突触接触。未交叉的视网膜纤维见于边缘视束、基底视根，偶尔也见于峡部视束。
Retinohypothalamic connections were studied in the duck after unilateral optic nerve transection using both light and electron microscopic techniques. Degenerated endings of optic fibers were found only in a circumscribed part of the anterior hypothalamic area, i.e. the ventral region of the contralateral suprachiasmatic nucleus. Images of degenerating boutons were observed in frozen sections (method according to Johnstone-Bowsher), and their presence confirmed by electron microscopic examination. These degenerating boutons make synaptic contacts with dendrites or dendritic spines of neurons of the suprachiasmatic nucleus.In the same material, the decussation of the optic chiasma was studied with the light microscope. Uncrossed retinal fibers were found in the marginal optic tract, the basal optic root and occasionally also in the isthmo-optic tract.