Brodmann area 12 · Lablypedia

In a nutshell

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).

Related on Lably

Through Topography

Lab · Class 7–11How the Monsoon Works Lab · Class 7–11Disaster Management

Climates of IndiaClass 7 · Social Science

It is indirectly connected to the globus pallidus as well as the substantia nigra, due to efferents to the striatum. Glutaminergic input is turned into GABAergic input there, which allows the frontal lobes to exhibit some control over basal ganglia activity.

Image

More in Neuroscience

StriatumNucleus in the basal ganglia of the brain Brain-derived neurotrophic factorProtein found in humans Ventral tegmental areaGroup of neurons on the floor of the midbrain Slow-wave sleepPeriod of sleep in humans and other animals Vascular endothelial growth factorProtein involved in blood vessel growth Premotor cortexPart of the human brain