Druga R, Syka J
Physiol Bohemoslov. 1984;33(1):31-42.
The ascending and descending projections to the central nucleus of the inferior colliculus (IC) were studied with the aid of retrograde transport of horseradish peroxidase (HRP). HRP-labelled cells were found in contralateral cochlear nuclei, where the majority of different cell types was stained. Few labelled cells were observed in the ipsilateral cochlear nuclei. HRP-positive neurones were found in all nuclei of the superior olivary complex on the ipsilateral side with the exception of the medial nucleus of the trapezoid body, which was never labelled either ipsilaterally or contralaterally. The largest concentration of HRP-labelled cells was usually observed in the ipsilateral superior olivary nucleus. Smaller numbers of labelled cells were present in contralateral nuclei of the superior olivary complex. Massive projections to the inferior colliculus were found from the contralateral and ipsilateral dorsal nucleus of the lateral lemniscus and ipsilateral ventral nucleus of the lateral lemniscus. Many neurones of the central and external nuclei of the contralateral inferior colliculus were labelled with HRP. Topographic organisation of the pathways ascending to the colliculus was expressed in the cochlear nuclei, lateral superior olivary nucleus and in the dorsal nucleus of the lateral lemniscus. HRP--positive cells were found in layer V of the ipsilateral auditory cortex, however, the evidence for topographic organisation was lacking.
借助辣根过氧化物酶（HRP）逆行运输技术，研究了下丘中央核（IC）的上行和下行投射。在对侧耳蜗核中发现了HRP标记的细胞，其中大多数不同类型的细胞都被染色。同侧耳蜗核中观察到的标记细胞很少。在同侧上橄榄复合体的所有核中都发现了HRP阳性神经元，但梯形体内侧核除外，该核在同侧或对侧均未被标记。通常在同侧上橄榄核中观察到HRP标记细胞的最大聚集。同侧上橄榄复合体内侧核中的标记细胞数量较少。从对侧和同侧外侧丘系背核以及同侧外侧丘系腹核发现了到下丘的大量投射。对侧下丘中央核和外侧核的许多神经元都被HRP标记。通向丘系的上行通路的拓扑组织在耳蜗核、外侧上橄榄核和外侧丘系背核中表现出来。在同侧听觉皮层的V层中发现了HRP阳性细胞，然而，缺乏拓扑组织的证据。
