Saleem K S, Tanaka K, Rockland K S
Laboratory for Neural Information Processing, Institute of Physical and Chemical Research (RIKEN), Saitama, Japan.
Cereb Cortex. 1993 Sep-Oct;3(5):454-64. doi: 10.1093/cercor/3.5.454.
The organization of connections from area TEO to TE was studied by the use of the anterograde tracer Phaseolus vulgaris leucoagglutinin (PHA-L). Single or, in one case, two small injections of the tracer were made in the lateral part of TEO. Labeled terminals were found in restricted regions of TE within two to five dense foci. In these foci, terminals were distributed beyond the middle layers to form a columnar cluster elongated vertical to the cortical surface. This specificity of connections may derive from an organization that is feature specific rather than retinotopic. Single axons reconstructed from the columnar foci showed heterogeneous features in the laminar distribution. Arbors of some axons were localized in the superficial layers, and those of other were in the middle layers.
利用顺行示踪剂菜豆白细胞凝集素（PHA-L）研究了从颞叶枕外侧区（TEO）到颞叶（TE）的连接组织。在TEO外侧部分进行了单次注射示踪剂，在一个案例中进行了两次小剂量注射。在TE的受限区域内发现了两个至五个密集病灶中的标记终末。在这些病灶中，终末分布在中层之外，形成垂直于皮质表面拉长的柱状簇。这种连接的特异性可能源于一种特征特异性而非视网膜拓扑组织。从柱状病灶重建的单个轴突在层状分布中表现出异质性特征。一些轴突的分支位于浅层，而其他轴突的分支位于中层。
