Martinez-Millán L, Holländer H
Brain Res. 1975 Jan 17;83(3):405-17. doi: 10.1016/0006-8993(75)90833-1.
In 13 squirrel monkeys [3H] leucine was injected into three different portions of the striate cortex: the occipital convexity, the interhemispheric surface and the depth of the calcarine fissure. After survival times between 8.5 h and 23 days. The radioautographic study of the brains revealed terminal fields of projection in various cortical areas outside the striate cortex. Transport of labelled material to cortex close to the striate area and in the superior part of the supratemporal sulcus occurred in all cases. After injection into the striate cortex of the interhemispheric surface, or into the depth of the calcarine fissure, a second projection was found in the prestriate belt situated in the cortex near the parieto-occipital sulcus. The fields of projection in the 3 cortical regions varied systematically with the variation of the injection site indicating a retinotopic organisation. If the cortical labelling was restricted to the supragranular layers, intracortical projection to layer V could be observed. If the cortical injection labelled only the infragranular layers, an intracortical projection appeared clearly at the level of layer IIIc. Labelling restricted to the supragranular layers resulted in cortico-cortical projections whereas labelling of only the infragranular layers did not. In the 3 cases in which the contralateral hemisphere was examined no evidence for transcallosal projections was found.
在13只松鼠猴中，将[³H]亮氨酸注射到纹状皮层的三个不同部位：枕叶凸面、半球间表面和距状裂深处。在8.5小时至23天的存活时间后。对大脑的放射自显影研究显示，在纹状皮层以外的各个皮层区域有投射终末场。在所有情况下，标记物质都运输到了靠近纹状区域的皮层以及颞上沟上部。在将其注射到半球间表面的纹状皮层或距状裂深处后，在位于顶枕沟附近皮层的纹前带中发现了第二个投射。三个皮层区域的投射场随注射部位的变化而系统地变化，表明存在视网膜拓扑组织。如果皮层标记仅限于颗粒上层，则可以观察到向V层的皮层内投射。如果皮层注射仅标记颗粒下层，则在IIIc层水平明显出现皮层内投射。仅限于颗粒上层的标记导致皮质-皮质投射，而仅颗粒下层的标记则不会。在检查对侧半球的3个病例中，未发现胼胝体投射的证据。
