THE ORGANIZATION OF CONNECTIONS BETWEEN AREAS V5 AND V2 IN MACAQUE MONKEY VISUAL-CORTEX
THE ORGANIZATION OF CONNECTIONS BETWEEN AREAS V5 AND V2 IN MACAQUE MONKEY VISUAL-CORTEX
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DOI：
10.1111/j.1460-9568.1989.tb00799.x
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发表时间：
1989-07-01
影响因子：
3.4
通讯作者：
ZEKI, S
中科院分区：
文献类型：
--
作者：
SHIPP, S;ZEKI, S
高等灵长类动物大脑皮层的V2区具有复杂的细胞色素氧化酶结构，其最具特征的元素是一组与其长轴正交的条纹。这些条纹可能与V2参与的各种途径之间的分离有关。在猕猴中，代谢更活跃的条纹是交替的厚和薄，只有一组，厚条纹，被发现具有标记细胞簇后，注射辣根过氧化物酶-小麦胚芽凝集素到V5区。这些集群中的一些，但不是全部，与粗条纹内部的子结构相吻合。猫头鹰猴的V2区也有类似的结构，只是粗细条纹的变化不太明显，这两点从外观上看都是如此，而且每一条交替的条纹都与MT区相连，MT区可能是V5区的同源物。它不仅在粗条纹内的V5传出细胞群之间延伸，而且还跨越居间的细条纹和较不活跃的条纹间。因为后者的功能不同于粗条纹的功能，所以看起来它们接收来自它们不投射到的区域V5的背投影可能与关于视觉的不同属性的信号的积分过程有关。
Area V2 of the cerebral cortex of higher primates has a complex cytochrome oxidase architecture whose most characteristic element is a set of stripes running orthogonal to its long axis. These stripes can be related to the segregation between the various pathways in which V2 participates. In the macaque monkey the more metabolically active stripes are alternately thick and thin and only one set, the thick stripes, is found to possess clusters of labelled cells following injections of horseradish peroxidase — wheatgerm agglutinin into area V5. Some of these clusters, but not all, coincide with substructures inside the thick stripes. V2 of the owl monkey has a similar organization except that the diversification into thick and thin stripes is less prominent, both in terms of their appearance and in that more than every alternate stripe is connected to area MT, the likely homologue of V5.The return projection from V5 to V2 is more widespread than the origin of the forward projection. It extends not only between the clusters of V5‐efferent cells within the thick stripes but also across the intervening thin stripes and less active interstripes. Because the latter subserve functions different from those of the thick stripes it would seem that their receipt of a back projection from an area to which they do not project, V5, may be relevant to the process of intergration of signals relating to different attributes of vision.