Weller R E, Steele G E
Department of Psychology, University of Alabama, Birmingham 35294.
J Comp Neurol. 1992 Oct 1;324(1):37-66. doi: 10.1002/cne.903240105.
Patterns of cortical connections and architectonics were used to determine subdivisions of inferior temporal (IT) cortex of squirrel monkeys. Single or multiple injections of the tracers wheat germ agglutinin-horseradish peroxidase, Fast Blue, Diamidino Yellow, Fluoro-Gold, and 3H-amino acids were placed into IT cortex. Most injections were placed in caudal IT cortex in the region previously shown to receive input from the caudal subdivision of the Dorsolateral Area, DLC; additional injections were placed in more rostral IT cortex. The results indicate the presence of two major regions: a caudal region, ITC, and a rostral region, ITR. An intermediate region of cortex along the ITC-ITR border that displays some connections of ITC and some connections of ITR may be another area. ITC contains a more myelinated dorsal area, ITCd, and a larger ventral area, ITCv. Both ITCd and ITCv receive a major projection from DLC; additional input from DLR, MT, and VII; and send strong projections to ITR, the lateral bank of the superior temporal sulcus, and dorsolateral prefrontal cortex. Only ITCd has strong connections with DLR and cortex in the depths of the superior temporal sulcus, and only ITCv has connections with lateral orbital cortex. The overall pattern of connections between ITC and DLC suggests that ITC has a crude topographic organization, with dorsal cortex representing the lower field and ventral cortex representing the upper field. ITR differs from ITC by receiving little if any input from DLC; projecting to inferior temporal polar cortex, the rostral Sylvian fissure, and medial orbital cortex; and having a less distinct layer IV. Comparison of subdivisions of inferior temporal cortex defined in the present study in squirrel monkeys and those reported in other primates suggests that ITC of squirrel monkeys may correspond to area TEO of macaque monkeys.
利用皮质连接模式和结构来确定松鼠猴颞下（IT）皮质的细分区域。将示踪剂小麦胚凝集素-辣根过氧化物酶、快蓝、双脒基黄、荧光金和³H-氨基酸单独或多次注射到IT皮质中。大多数注射部位位于IT皮质的尾部区域，该区域先前已显示接受背外侧区（DLC）尾部亚区的输入；额外的注射部位位于更靠前的IT皮质。结果表明存在两个主要区域：一个尾部区域，即ITC，和一个靠前区域。即ITR。沿着ITC-ITR边界的皮质中间区域，显示出ITC的一些连接和ITR的一些连接，可能是另一个区域。ITC包含一个髓鞘较多的背侧区域，即ITCd，和一个较大的腹侧区域，即ITCv。ITCd和ITCv都接受来自DLC的主要投射；来自背外侧视网膜区（DLR）、颞中区（MT）和VII区的额外输入；并向ITR、颞上沟外侧壁和背外侧前额叶皮质发出强烈投射。只有ITCd与DLR和颞上沟深处的皮质有强连接，只有ITCv与眶外侧皮质有连接。ITC和DLC之间的整体连接模式表明，ITC具有粗略的拓扑组织，背侧皮质代表下部视野，腹侧皮质代表上部视野。ITR与ITC的不同之处在于，它几乎没有从DLC接收任何输入；投射到颞下极皮质、靠前的西尔维厄斯裂和眶内侧皮质；并且第IV层不太明显。将本研究中定义的松鼠猴颞下皮质细分区域与其他灵长类动物报告的区域进行比较表明，松鼠猴的ITC可能对应于猕猴的TEO区。
