Horizontal projections of area 17 in Cebus monkeys: metric features, and modular and laminar distribution

Brazilian Journal of Medical and Biological Research

A.k.j. Amorim¹  C.w. Picanço-diniz¹ 

[1] ,Universidade Federal do Pará

关键词: V1 intracortical projections;    neurons;    axon terminals;    visual cortex;    primate;   

DOI  :  10.1590/S0100-879X1997001200018

来源: SciELO

【 摘 要 】

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 a, IIIb ß 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

【 授权许可】

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