COMPARISON OF SUBCORTICAL CONNECTIONS OF INFERIOR TEMPORAL AND POSTERIOR PARIETAL CORTEX IN MONKEYS
COMPARISON OF SUBCORTICAL CONNECTIONS OF INFERIOR TEMPORAL AND POSTERIOR PARIETAL CORTEX IN MONKEYS
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DOI：
10.1017/s0952523800003229
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发表时间：
1993-01-01
影响因子：
1.9
通讯作者：
UNGERLEIDER, LG
中科院分区：
文献类型：
--
作者：
BAIZER, JS;DESIMONE, R;UNGERLEIDER, LG
为了研究物体视觉和空间视觉皮质处理通路的皮质下连接，我们向六只恒河猴的下颞叶和后顶叶皮质注射了逆行或顺行示踪剂。颞部注射包括半球侧面的 TE 区域和 TEO 区域的相邻部分。顶叶注射覆盖顶内沟后岸，包括 VIP 和 LIP 区域。我们的结果表明，有几个结构投射到颞叶和顶叶皮层，包括内侧和外侧枕核、屏状核和基底核。然而，枕核和屏状核中投射到这两个系统的细胞主要位于这些结构的不同部分，颞叶和顶叶皮层的末端也是如此。同样，从颞叶和顶叶皮层到尾状核和壳核的投射在很大程度上是分离的。最后，我们发现从顶叶皮层而不是颞叶皮层到脑桥和上丘的投影，而我们发现杏仁核的外侧基底核和内侧基底核与颞叶皮层相互连接，而不是顶叶皮层。因此，结果表明，就像两个视觉处理系统的皮质连接一样，皮质下连接也明显分离。
To investigate the subcortical connections of the object vision and spatial vision cortical processing pathways, we injected the inferior temporal and posterior parietal cortex of six Rhesus monkeys with retrograde or anterograde tracers. The temporal injections included area TE on the lateral surface of the hemisphere and adjacent portions of area TEO. The parietal injections covered the posterior bank of the intraparietal sulcus, including areas VIP and LIP. Our results indicate that several structures project to both the temporal and parietal cortex, including the medial and lateral pulvinar, claustrum, and nucleus basalis. However, the cells in both the pulvinar and claustrum that project to the two systems are mainly located in different parts of those structures, as are the terminals which arise from the temporal and parietal cortex. Likewise, the projections from the temporal and parietal cortex to the caudate nucleus and putamen are largely segregated. Finally, we found projections to the pons and superior colliculus from parietal but not temporal cortex, whereas we found the lateral basal and medial basal nuclei of the amygdala to be reciprocally connected with temporal but not parietal cortex. Thus, the results show that, like the cortical connections of the two visual processing systems, the subcortical connections are remarkably segregated.