Amorim A K, Picanço-Diniz C W
Departamento de Fisiologia, Universidade Federal do Pará, Belém, PA, Brasil.
Braz J Med Biol Res. 1997 Dec;30(12):1489-501. doi: 10.1590/s0100-879x1997001200018.
Metric features and modular and laminar distributions of intrinsic projections of area 17 were studied in Cebus apella. Anterogradely and retrogradely labeled cell appendages were obtained using both saturated pellets and iontophoretic injections of biocytin into the operculum. Laminar and modular distributions of the labeled processes were analyzed using Nissl counterstaining, and/or cytochrome oxidase and/or NADPH-diaphorase histochemistry. We distinguished three labeled cell types: pyramidal, star pyramidal and stellate cells located in supragranular cortical layers (principally in layers IIIa, IIIb alpha, IIIb beta and IIIc). Three distinct axon terminal morphologies were found, i.e., Ia, Ib and II located in granular and supragranular layers. Both complete and partial segregation of group I axon terminals relative to the limits of the blobs of V1 were found. The results are compatible with recent evidence of incomplete segregation of visual information flow in V1 of Old and New World primates.
在僧帽猴中研究了17区固有投射的度量特征以及模块化和分层分布。使用饱和微丸和将生物素离子电渗注入盖来获得顺行和逆行标记的细胞附属物。使用尼氏复染、和/或细胞色素氧化酶和/或NADPH-黄递酶组织化学分析标记突起的分层和模块化分布。我们区分出三种标记细胞类型：位于颗粒上层皮质层（主要在IIIa、IIIbα、IIIbβ和IIIc层）的锥体细胞、星形锥体细胞和星状细胞。发现了三种不同的轴突终末形态，即位于颗粒层和颗粒上层的Ia、Ib和II型。发现I组轴突终末相对于V1区斑点边界存在完全和部分分离。这些结果与新旧世界灵长类动物V1区视觉信息流不完全分离的最新证据相符。
