Origins of axons in the cat's acoustic striae determined by injection of horseradish peroxidase into severed tracts
Origins of axons in the cat's acoustic striae determined by injection of horseradish peroxidase into severed tracts
复制标题
通过将辣根过氧化物酶注射到切断的管道中确定猫声纹中轴突的起源
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
W. Warr
中科院分区：
文献类型：
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作者：
Joe C. Adams;W. Warr
通过手术切断这些管道并将HRP注入切口，研究了背侧和中间声纹纤维的起源和终止。这个过程的结果是用HRP填充切断的轴突。填充轴突追溯到细胞群的起源和一些终止的声纹。在耳蜗核和橄榄周细胞群中发现HRP标记的终末。用HRP填充细胞的范围从完全（导致高尔基体样图像）到几乎不可检测。标记细胞丰富的背侧和后腹侧耳蜗核附近的注射，以及分散在整个橄榄周围细胞群的两侧，是浓度最高的同侧外侧上级橄榄。在对侧的注射，标记细胞被发现沿着内侧边缘的背侧耳蜗核，在间质核的赫氏纹，并稀疏地在整个腹侧耳蜗核。标记细胞的分布是相似的HRP注射后的耳蜗背核，除了这些注射显示额外的下丘和两侧的斜方体的腹侧核的下行预测。这些额外的投射被解释为通过腹侧途径进入CN。本研究结果与声纹纤维的生理记录结果雅阁。
Origins and terminations of fibers of the dorsal and intermediate acoustic striae were studied by surgically severing these tracts and injecting HRP into the incision. This procedure results in filling the severed axons with HRP. Filled axons were traced to cell groups of origin and to some terminations of the acoustic striae. HRP‐labeled terminals were found in the cochlear nuclei as well as in periolivary cell groups. Filling of cells with HRP ranged from being complete, resulting in Golgi‐like images, to being barely detectable. Labeled cells were abundant in the dorsal and posteroventral cochlear nucleus adjacent to the injection as well as scatered throughout the periolivary cell groups of both sides, being highest in concentration around the ipsilateral lateral superior olive. On the side contralateral to the injection, labeled cells were found along the medial border of the dorsal cochlear nucleus, in the interstitial nucleus of the stria of Held, and sparsely throughout the ventral cochlear nucleus. The distribution of labeled cells was similar following HRP injections of the dorsal cochlear nucleus, except that these injections revealed additional descending projections from the inferior colliculi and from the ventral nucleus of the trapezoid body of both sides. These additional projections were interpreted as entering the CN by a ventral route. Findings of this study are in accord with physiological recordings made from fibers of the acoustic striae.