area 5 of Peele
Acronym: 5
The term area 5 of Peele refers to a cortical area in the parietal lobe defined on the basis of cytoarchitecture in the rhesus macaque (Macaca mulatta). The author regarded it as the same as area 5 of Brodmann (guenon). The cortical thickness was 1.62 mm. The molecular layer of the cerebral cortex (I) was wider than in the postcentral gyrus and contained only a few spindle cells and granule cells. The external granular layer (II) was about 8 to 10 cells deep with granule cells larger than in layer IV; an occasional very small pyramidal cell was seen. Cells in the external pyramidal layer (III) were pyramidal cells that were striking in size progression from smaller to very large in the deepest of three sublayers; it differed from area 7 of Peele in that the cells were not arranged in a radial pattern. The internal granular layer (IV) was about 15 cells thick with distinct outer and inner boundaries; it was composed predominantly of very small granule cells. The internal pyramidal layer (V) was ill-defined and contained medium to large pyramidal cells. The multiform layer (VI) was quite wide and separated from layer V by a cell-poor zone; it contained medium sized granule cells, small pyramidal cells and spindle cells of medium size ( Peele-1942 ).

Also known as: area 5NeuroNames ID : 1897


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