ASCENDING PATHWAYS FROM THE MONKEY SUPERIOR COLLICULUS - AN AUTORADIOGRAPHIC ANALYSIS
ASCENDING PATHWAYS FROM THE MONKEY SUPERIOR COLLICULUS - AN AUTORADIOGRAPHIC ANALYSIS
复制标题
DOI：
10.1002/cne.901920414
复制
发表时间：
1980-01-01
影响因子：
2.5
通讯作者：
ROYCE, GJ
中科院分区：
文献类型：
--
作者：
HARTING, JK;HUERTA, MF;ROYCE, GJ
用放射自显影示踪法分析恒河猴顶盖分离上行通路的分布。来自深丘神经元的轴突终止于几个丘脑背侧核团，这些背侧核团依次投射到额叶眼野(第8区)和顶下小叶(第7区)。这些皮质区域在功能上与深丘相似，来自顶盖深部的上升通道必须至少部分解释这些功能相似的原因。目前的放射自显影显示了几个核区的投射，这些核区以前没有被识别为猴子的深丘目标。这些靶点包括动眼神经复合体的内脏细胞柱、内侧纵束的吻侧间质核和腹侧前核的大细胞分裂。深顶盖投射广泛地终止于背内侧核的板层旁和束旁核内，对中央、外侧和中央正中核的投射很少。仅限于浅层的放射性同位素注射显示密集的投射至延髓旁核、顶盖前核、枕下核和外侧枕核以及腹侧和背侧膝状体核。外侧膝状体背侧核内运输的蛋白质占据了S层和板层间区。
The autoradiographic tracing method was used to analyze the distribution of ascending tectofugal pathways in the rhesus monkey. Axons which arise from deep collicular neurons terminate within several dorsal thalamic nuclei which in turn project upon the frontal eye fields (area 8) and the inferior parietal lobule (area 7). These cortical areas are functionally similar to the deep colliculus and ascending channels from the deep tectum must account, at least in part, for these functional similarities. The present autoradiographs reveal projections to several nuclear zones previously not identified as deep collicular targets in the monkey. Such targets include the visceral cell columns of the oculomotor complex, the rostral interstitial nucleus of the medial longitudinal fasciculus and the magnocellular division of the ventral anterior nucleus. Deep tectal input terminates extensively within the paralamellar region of the mediodorsal nucleus and in the parafascicular nucleus; very little input to the central lateral and centromedian nuclei was observed. Radioisotope injections restricted to the superficial layers reveal dense projections to the parabigeminal nucleus, the pretectum, the inferior and lateral pulvinar nuclei and to the ventral and dorsal lateral geniculate nuclei. Transported protein within the dorsal lateral geniculate nucleus occupied the S layers and the interlaminar zones.