Diamond I T
Fed Proc. 1976 Jan;35(1):60-7.
In all mammals there are two parallel visual pathways ascending to the cortex: the geniculostriate system and the tectopulvinar system. However, there is a difference among mammals in the locus and extent of the cortical target of the tectopulvinar path. In several diverse species such as squirrel and tree shrew the cortical target of the tectopulvinar system lies adjacent to area 17 and extends into the temporal lobe; but areas 18 and 19 do not receive fibers from the tectorecipient zone of the pulvinar in Galago and presumably in all primates. This anatomical difference may account for the drastic sensory effect of removing area 17 in primates, and the failure to find marked sensory changes in tree shrews or squirrels deprived of the geniculostriate system.
在所有哺乳动物中，有两条并行的视觉通路通向皮层：膝状纹状体系统和顶盖枕叶系统。然而，在哺乳动物中，顶盖枕叶通路的皮层靶点在位置和范围上存在差异。在几种不同的物种中，如松鼠和树鼩，顶盖枕叶系统的皮层靶点位于17区附近，并延伸到颞叶；但在懒猴以及大概所有灵长类动物中，18区和19区并未接收来自枕叶顶盖接受区的纤维。这种解剖学上的差异可能解释了切除灵长类动物17区所产生的剧烈感觉效应，以及在剥夺了膝状纹状体系统的树鼩或松鼠中未发现明显感觉变化的原因。
Zotero 插件