Faye-Lund H, Osen K K
Anat Embryol (Berl). 1985;171(1):1-20. doi: 10.1007/BF00319050.
This paper defines the pattern of subdivision of the inferior colliculus in rat. It is based on serial sections of brains of albino and hooded rats cut in the frontal, sagittal and horizontal planes using Golgi, Nissl and a combined cell-myelin method. In rat, like in other mammals, the inferior colliculus consists of a central nucleus, an external cortex, and a dorsal cortex. The central nucleus is flattened in the frontal plane and confined to the caudomedial part of the inferior colliculus. It is characterized by a lamellar organization of disc-shaped neurons interspersed with multipolar cells. The cells are small to medium-sized. Although there is a dorsoventral gradient in size and packing density of cells within the nucleus, the overall size is smaller and the packing density larger than in adjacent subdivisions. The two cortices each consists of three layers. The outer-most layer is common to the two cortices, forming a fibrocellular capsule continuous along most of the circumference of the inferior colliculus. The external cortex is located lateral, rostral, ventral and ventrocaudal to the central nucleus. Its second layer, deep to the superficial capsule, is characterized by clusters of many small and a few medium-sized neurons in a myelin-dense neuropil. Layer 3, which constitutes the major portion of the subdivision, consists of relatively scattered, small, medium and large cells, the most characteristic element being large multipolar neurons with coarse Nissl granules. The dorsal cortex is located dorsocaudal and dorsomedial to the central nucleus. Its second layer is composed of small neurons, while the third, deep layer in addition contains medium-sized neurons. The cell density is intermediate to that of the central nucleus and the deep part of the external cortex. We have tried to facilitate the parcellation by reference to easily recognizable, nearby structures and to standard stereotaxic coordinates.
本文定义了大鼠下丘的细分模式。它基于对白化大鼠和有帽大鼠大脑的连续切片，这些切片采用高尔基染色法、尼氏染色法和细胞-髓鞘联合染色法，分别在额平面、矢状平面和水平平面上进行切割。与其他哺乳动物一样，大鼠的下丘由中央核、外侧皮质和背侧皮质组成。中央核在额平面上呈扁平状，局限于下丘的尾内侧部分。其特征是盘状神经元呈层状排列，其间散布着多极细胞。这些细胞为中小型。尽管核内细胞的大小和堆积密度存在背腹梯度，但总体尺寸比相邻细分区域小，堆积密度比相邻细分区域大。两个皮质各由三层组成。最外层是两个皮质共有的，形成一个纤维细胞囊，沿下丘的大部分圆周连续。外侧皮质位于中央核的外侧、吻侧、腹侧和腹尾侧。其第二层位于浅囊之下，其特征是在髓磷脂密集的神经纤维网中有许多小神经元和一些中型神经元的簇。构成该细分区域主要部分的第3层由相对分散的小、中、大细胞组成，最具特征性的元素是具有粗大尼氏颗粒的大多极神经元。背侧皮质位于中央核的背尾侧和背内侧。其第二层由小神经元组成，而第三层深层还包含中型神经元。细胞密度介于中央核和外侧皮质深部之间。我们试图通过参考易于识别的附近结构和标准立体定位坐标来促进分区。
