area 1 of Peele
Acronym: 1
The term area 1 of Peele refers to a cortical area in the postcentral gyrus defined on the basis of cytoarchitecture in the rhesus macaque (Macaca mulatta). The author regarded it as the same as area 1 of Brodmann (guenon). The cortical thickness was 1.26 mm. The molecular layer of the cerebral cortex (I) was thin and contained a moderate number of cells, predominantly spindle cells with a few granule cells. The external granular layer (II) was about 10 cells deep and composed of granule cells larger than in layer IV; an occasional small pyramidal cell was seen deep in the layer. The external pyramidal layer (III) was divisible into two or three sublayers, but without regular pattern; small pyramidal cells in the outer sublayers increased to medium size in deeper sublayers. The internal granular layer (IV) was twice as thick as layer II and was composed of small, densely packed granule cells with a few larger granule cells. The internal pyramidal layer (V) had about the same thickness as layer IV; most of its cells were small to medium, diffusely distributed pyramidal cells. The multiform layer (VI) contained spindle cells, small pyramidal cells and a few pyramidal cells of medium size ( Peele-1942 ).

Also known as: area 1NeuroNames ID : 1183

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