Oliver D L
J Comp Neurol. 1982 Jul 20;209(1):1-16. doi: 10.1002/cne.902090102.
The subdivisions of the medial geniculate body in Tupaia recognized in previous connectional and cytoarchitectural studies are identified in Golgi-impregnated material. They may be distinguished by the organization of the neuropil, especially the dendrites, and, in many cases, by differences in the neurons. The ventral nucleus contains tufted cells with disc-shaped dendritic fields which are aligned to form laminae. The caudomarginal and deep dorsal nuclei have less tufted, less precisely arranged cells with longer, thin appendages. Neurons in the suprageniculate and dorsal nuclei are similar except that they apparently are arranged more randomly and tend to have more spherically shaped dendritic fields. The medial division is characterized rostrally by the presence of stellate cells and caudally by large cells which appear to be the neurons, observed in previous studies to have widespread connections. The results of this Golgi study suggest that the subdivisions of the medial geniculate body might be grouped differently than in previous reports. When combined with data from previous studies of connections, the results show that the medial geniculate body of even distantly related species may follow a common plan. The ventral nucleus is the medial geniculate component of the central pathway which extends from the central nucleus of the inferior colliculus to the primary auditory cortex. Most of the other medial geniculate subdivisions participate in either pericentral pathways originating in the cortex and other nuclei which surround the central nucleus of the inferior colliculus or in the pathways of the lateral midbrain tegmentum. Pericentral and lateral tegmental pathways terminate in non-primary auditory cortex. The widespread pathway involves only the caudal nucleus of the medial division. It receives afferents from most, if not all, of the midbrain regions that give rise to the other pathways and distributes to all parts of the auditory cortex where it terminated in layers other than layer III-IV.
在树鼩中，先前的联系和细胞结构研究中所识别出的内侧膝状体的各个亚区，在高尔基染色材料中得到了确认。它们可通过神经毡（尤其是树突）的组织结构来区分，在许多情况下，也可通过神经元的差异来区分。腹侧核包含具有盘状树突野的簇状细胞，这些细胞排列成层。尾缘核和深背核的簇状细胞较少，排列不太精确，细胞具有更长、更细的附属物。上膝核和背核中的神经元相似，只是它们的排列明显更随机，并且往往具有更呈球形的树突野。内侧部在前部以星状细胞的存在为特征，在后部以大细胞为特征，这些大细胞似乎就是先前研究中观察到具有广泛联系的神经元。这项高尔基染色研究的结果表明，内侧膝状体的亚区划分可能与先前的报道有所不同。当与先前关于联系的研究数据相结合时，结果表明，即使是亲缘关系较远的物种，其内侧膝状体也可能遵循一个共同的模式。腹侧核是从下丘中央核延伸至初级听觉皮层的中央通路的内侧膝状体组成部分。内侧膝状体的大多数其他亚区要么参与起源于围绕下丘中央核的皮层和其他核团的中央周缘通路，要么参与外侧中脑被盖的通路。中央周缘和外侧被盖通路终止于非初级听觉皮层。广泛通路仅涉及内侧部的尾侧核。它接收来自产生其他通路的大部分（如果不是全部）中脑区域的传入纤维，并分布到听觉皮层的所有部分，在那里它终止于除III - IV层以外的各层。
