Brodmann (1909) area 12

Definition

Brodmann area 12 is a subdivision of the cerebral cortex of the guenon defined on the basis of cytoarchitecture. It occupies the most rostral portion of the frontal lobe. Brodmann-1909 did not regard it as homologous, either topographically or cytoarchitecturally, to rostral area 12 of the human. Distinctive features (Brodmann-1905): a quite distinct internal granular layer (IV) separates slender pyramidal cells of the external pyramidal layer (III) and the internal pyramidal layer (V); the multiform layer (VI) is expanded, contains widely dispersed spindle cells and merges gradually with the underlying cortical white matter; all cells, including the pyramidal cells of the external and internal pyramidal layers are inordinately small; the internal pyramidal layer (V) also contains spindle cells in groups of two to five located close to its border with the internal granular layer (IV).

Also known as area 12 of Brodmann, area 12 of Brodmann-1909, area praefrontalis, B09-12, Brodmann (1909) area 12, Brodmann area 12, Brodmann area 12, prefrontal, frontopolar area — per UBERON

The Brodmann (1909) area 12 is a part of the Nervous.

Also identified as

• UMLS C1272534 per UBERON