Vogt B A, Pandya D N, Rosene D L
J Comp Neurol. 1987 Aug 8;262(2):256-70. doi: 10.1002/cne.902620207.
The cytoarchitecture and thalamic afferents of cingulate cortex were evaluated in the rhesus monkey (Macaca mulatta). Area 24 has three divisions of which area 24a is adjacent to the callosal sulcus and has the least laminar differentiation. Area 24b has more clearly defined layers II, III, and Va, and area 24c, which forms the lower bank of the anterior cingulate sulcus, has a particularly dense layer III. Area 23 also has three divisions, each of which has a distinct layer IV. Area 23a is adjacent to the callosal sulcus and has the thinnest layers II-IV, which have the same cell density as layers V and VI. Area 23b has the largest pyramids in layers IIIc and Va, and area 23c, in the depths of the posterior cingulate sulcus, has the broadest external and thinnest internal pyramidal layers. Finally, areas 29 and 30 are located in the posterior depths of the callosal sulcus. Two divisions of area 29 are apparent: one with a granular layer directly adjacent to layer I (area 29a-c) and another with differentiation of layers III and IV (area 29d). Area 30 has a dysgranular layer IV. Injections of the retrograde tracer horseradish peroxidase (HRP) were made into subdivisions of cingulate cortex in the monkey. Area 25 received thalamic input mainly from the midline parataenial (Pt), central densocellular (Cdc), and reuniens nuclei as well as from the dorsal parvicellular division of the mediodorsal nucleus (MDpc). A less dense projection also originated in the intralaminar parafascicular (Pf), central superior, and limitans (Li) nuclei as well as the medial division of the anterior nuclei (AM). Areas 24a and 24b received most thalamic afferents from fusiform and multipolar cells in the Cdc and Pf nuclei with fewer from the ventral anterior (VA) and MDpc and MD densocellular (MDdc) nuclei and only minor input from AM. Most input to premotor cingulate area 24c appeared to originate in VA, MDdc, and Li. Area 29 received the most dense input from nuclei traditionally associated with limbic cortex including the anteroventral (AV), anterodorsal (AD), and laterodorsal (LD) nuclei. Areas 23a and 23b, in contrast, did not receive AV, AD, or LD input, but the greatest proportion of their thalamic afferents arose in AM. Less-pronounced input also came from the lateroposterior (LP), medial pulvinar, and MDdc nuclei.(ABSTRACT TRUNCATED AT 400 WORDS)
在恒河猴（猕猴）中评估了扣带回皮质的细胞结构和丘脑传入纤维。24区有三个分区，其中24a区毗邻胼胝体沟，层状分化最少。24b区有更清晰界定的II、III和Va层，而构成前扣带回沟下壁的24c区有特别密集的III层。23区也有三个分区，每个分区都有一个独特的IV层。23a区毗邻胼胝体沟，其II - IV层最薄，细胞密度与V层和VI层相同。23b区在IIIc层和Va层有最大的锥体神经元，位于后扣带回沟深处的23c区有最宽的外锥体层和最薄的内锥体层。最后，29区和30区位于胼胝体沟的后部深处。29区有两个明显的分区：一个分区的颗粒层直接毗邻I层（29a - c区），另一个分区的III层和IV层有分化（29d区）。30区有一个颗粒减少的IV层。将逆行示踪剂辣根过氧化物酶（HRP）注入猴的扣带回皮质各亚区。25区主要从中线旁室（Pt）、中央密集细胞（Cdc）和连合核以及背内侧核的背侧小细胞部（MDpc）接受丘脑输入。密度较低的投射也起源于板内核束旁（Pf）、中央上核和界核（Li）以及前核的内侧部（AM）。24a区和24b区的丘脑传入纤维大多来自Cdc核和Pf核中的梭形细胞和多极细胞，来自腹前核（VA）、MDpc核和MD密集细胞部（MDdc）核的较少，仅从AM接受少量输入。运动前扣带回24c区的大部分输入似乎起源于VA、MDdc和Li。29区从传统上与边缘皮质相关的核团接受最密集的输入，包括腹前核（AV）、背前核（AD）和背外侧核（LD）。相比之下，23a区和23b区没有接受AV、AD或LD的输入，但其丘脑传入纤维的最大比例起源于AM。不太明显的输入也来自后外侧核（LP）、内侧丘脑枕和MDdc核。（摘要截断于400字）
