Clarke S
Institut de Physiologie, Université de Lausanne, Switzerland.
Proc Biol Sci. 1994 Jul 22;257(1348):87-92. doi: 10.1098/rspb.1994.0098.
Human extrastriate visual cortex contains several functionally defined visual areas of which four (V2, VP, V4 and V5) can be identified using cyto- and myeloarchitectonic criteria. A case with a small lesion in the superolateral part of cytoarchitectonic area 19, outside the previously defined visual areas, has been studied with the Nauta method for anterogradely degenerating axons. The infarcted part of cortex formed dense intrahemispheric connections in some visual areas (V1, V2, V3 and probably a part of V4) and weaker connections in others (VP, V5). Connections to V1 and to V2 were mainly directed to the representation of the lower paramedian part of the visual field. Intrinsic connections, visualized by the degenerating axon segments in the cortex around the lesion, had a patchy distribution. In conclusion, intrahemispheric corticocortical connections link preferentially some of the visual areas and within these areas certain parts.
人类纹外视觉皮层包含几个功能上定义的视觉区域，其中四个区域（V2、VP、V4和V5）可通过细胞和髓鞘构筑标准识别。有一例患者，其病变位于细胞构筑区19的上外侧部分，在先前定义的视觉区域之外，我们使用Nauta法对其进行了研究，以观察顺行性变性轴突。梗死的皮层部分在一些视觉区域（V1、V2、V3以及可能的V4的一部分）形成了密集的半球内连接，而在其他区域（VP、V5）形成的连接较弱。与V1和V2的连接主要指向视野下中旁部分的代表区。通过病变周围皮层中变性轴突段可视化的内在连接呈斑片状分布。总之，半球内皮质皮质连接优先连接某些视觉区域以及这些区域内的某些部分。
