Origin of ascending projections to inferior colliculus in the mustache bat, Pteronotus parnellii
Origin of ascending projections to inferior colliculus in the mustache bat, Pteronotus parnellii
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小胡子蝙蝠 Pteronotus parnellii 下丘上升投射的起源
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
J. H. Casseday
中科院分区：
文献类型：
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作者：
J. Zook;J. H. Casseday
辣根过氧化物酶（HRP）的逆行运输的胡子蝙蝠的下丘的途径的起源进行了鉴定。这项研究的一个具体目标是获得证据，这将有助于确定细胞核，在以前的论文中显示，具有不寻常的细胞结构特征，是蝙蝠所独有的，或者它们是否与其他哺乳动物中没有很好分化的区域同源。翼龙下脑干中的听觉通路似乎与其他哺乳动物的基本组织相同：将HRP注入一侧下丘后，标记细胞位于对侧耳蜗核，同侧内侧上级橄榄核，双侧外侧上级橄榄核，同侧外侧丘系的腹核和中间核，双侧位于外侧丘系背核。这些标记模式为理解蝙蝠的专门听觉区域如何在哺乳动物听觉系统的基本计划中组织提供了基础。在前腹侧耳蜗核的异常小的球形细胞似乎是同源的星状细胞在前腹侧耳蜗核的猫。在上级橄榄，标记细胞的图案的差异区分内侧从外侧上级橄榄。在外侧丘系中，标记细胞的图案在中间核和腹侧核这两个特殊部分之间以及在这些与外侧丘系的背侧核之间显示出明显的差异。结果是一致的假设，不寻常的听觉神经核的蝙蝠有同系物的哺乳动物的听觉系统不是专门的回声定位。
The origins of pathways to the inferior colliculus of the mustache bat were identified by retrograde transport of horseradish peroxidase (HRP). A specific goal of this study was to obtain evidence that would help determine whether the nuclei, shown in the previous paper to have unusual cytoarchitectural features, are unique to bats, or whether they are homologous to areas that are not well differentiated in other mammals. The auditory pathways in the lower brain stem of Pteronotus appear to conform to the same basic organization as in other mammals: After injection of HRP into one inferior colliculus, labeled cells are located contralaterally in the cochlear nucleus, ipsilaterally in the medial superior olive, bilaterally in the lateral superior olive, ipsilaterally in the ventral and intermediate nuclei of the lateral lemniscus, and bilaterally in the dorsal nucleus of the lateral lemniscus. These patterns of labeling provide a basis for understanding how the specialized auditory areas of the bat may be organized within a basic plan of mammalian auditory systems. In the anteroventral cochlear nucleus the unusually small spherical cells seem to be homologous to stellate cells in the anteroventral cochlear nucleus of the cat. In the superior olive, differences in patterns of labeled cells distinguish the medial from the lateral superior olive. In the lateral lemniscus the pattern of labeled cells shows clear differences between the two special parts, intermediate and ventral nuclei, as well as between these and the dorsal nucleus of the lateral lemniscus. The results are consistent with the hypothesis that the unusual auditory nuclei of the bat have homologues in mammals whose auditory systems are not specialized for echolocation.