PROJECTION OF COCHLEAR AND LAGENAR NERVES ON COCHLEAR NUCLEI OF PIGEON
PROJECTION OF COCHLEAR AND LAGENAR NERVES ON COCHLEAR NUCLEI OF PIGEON
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DOI：
10.1002/cne.901200305
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发表时间：
1963-01-01
影响因子：
2.5
通讯作者：
RASMUSSEN, GL
中科院分区：
文献类型：
--
作者：
BOORD, RL;RASMUSSEN, GL
用直接解剖和实验神经解剖学方法，研究了家鸽耳蜗神经的神经成分及其向延髓初级中枢的投射。病变被放置在耳蜗神经和螺旋神经节的选定水平。术后生存2-3天后，通过Nauta-Gygax方法对脑干连续切片进行轴突变性染色。通过Marchi方法的Swank-Davenport改良处理静听神经，以显示退化的髓鞘。耳蜗神经传入，因为它们涉及耳蜗的基底，中间和顶端三分之一，显示出耳蜗复合体内有序的空间排列。在大细胞核内，基底纤维终止于最吻侧和内侧，顶端纤维终止于最尾侧和外侧，中间纤维位于它们之间。在角状核内，基底纤维终止于尾侧和背侧，中间和顶端纤维逐渐位于喙侧和腹侧。来自黄斑的纤维分布到耳蜗核、与前庭系统相关的核、脑干网状结构和小脑核的特殊分化的感受区。鸽子和高等哺乳动物之间的比较揭示了耳蜗复合体内神经元组织的相似性，尽管在外周听觉感受器器官和耳蜗核的位置和大小有相当大的结构差异。
The organization of the neural components of the cochlear nerve of the pigeon and their projection on primary centers in the medulla were studied by direct dissection and experimental neuroanatomical methods. Lesions were placed at selected levels in the cochlear nerve and spiral ganglion. Following postoperative survival periods of 2-3 days, serial sections of the brain stems were stained for axonal degeneration by the Nauta-Gygax method. The statoacustic nerves were handled by the Swank-Davenport modification of the Marchi method to exhibit degenerating myelin. Cochlear nerve afferents, as they relate to the basal, middle and apical thirds of the cochlea, show an orderly spatial arrangement within the cochlear complex. Within nucleus magnocellularis basal fibers terminate most rostral and medial, apical fibers most caudal and lateral and middle fibers occupy an intermediate position between them. Within nucleus angularis basal fibers terminate most caudal and dorsal, and middle and apical fibers progressively more rostral and ventral in position. Fibers from the macula lagenae distribute to specially differentiated receptive areas of both cochlear nuclei, nuclei associated with the vestibular system, reticular formation of the brain stem and cerebellar nuclei. Comparisons between the pigeon and higher mammals reveal similarities in the organization of neurons within the cochlear complex despite considerable structural differences in the peripheral auditory receptor organ and the position and size of the cochlear nuclei.