Brodmann area 28 is a subdivision of the

cerebral cortex The cerebral cortex, also known as the cerebral mantle, is the outer layer of neural tissue of the cerebrum of the brain in humans and other mammals. The cerebral cortex mostly consists of the six-layered neocortex, with just 10% consisting of ...

defined on the basis of

cytoarchitecture Cytoarchitecture ( Greek '' κύτος''= "cell" + '' ἀρχιτεκτονική''= "architecture"), also known as cytoarchitectonics, is the study of the cellular composition of the central nervous system's tissues under the microscope. Cytoarc ...

. It is located on the medial aspect of the

temporal lobe The temporal lobe is one of the four Lobes of the brain, major lobes of the cerebral cortex in the brain of mammals. The temporal lobe is located beneath the lateral fissure on both cerebral hemispheres of the mammalian brain. The temporal lobe ...

and is part of the

entorhinal cortex The entorhinal cortex (EC) is an area of the brain's allocortex, located in the medial temporal lobe, whose functions include being a widespread network hub for memory, navigation, and the perception of time.Integrating time from experience in the ...

(Brodmann-1909).

Human

In humans, Brodmann area 28, and

Brodmann area 34 Brodmann area 34 is a part of the brain. It has been described as part of the entorhinal area and the superior temporal gyrus. The entorhinal area is the main interface between the hippocampus and neocortex and involved in memory, navigation an ...

together constitute approximately the

(Brodmann-1909).

Guenon

Brodmann regarded the location of area 28 adjacent to the

hippocampus The hippocampus (via Latin from Greek , 'seahorse') is a major component of the brain of humans and other vertebrates. Humans and other mammals have two hippocampi, one in each side of the brain. The hippocampus is part of the limbic system, a ...

as imprecisely represented in the illustration of the cortex of the guenon brain in Brodmann-1909. It is located on the medial aspect of the

Distinctive features (Brodmann-1905)

The molecular layer (I) is unusually wide; the external granular layer (II) contains nests of, for the most part,

multipolar cell A multipolar neuron is a type of neuron that possesses a single axon and many dendrites (and dendritic branches), allowing for the integration of a great deal of information from other neurons. These processes are projections from the neuron cell ...

s: the

external pyramidal layer The cerebral cortex, also known as the cerebral mantle, is the outer layer of neural tissue of the cerebrum of the brain in humans and other mammals. The cerebral cortex mostly consists of the six-layered neocortex, with just 10% consisting of ...

(III) contains medium-sized pyramidal cells which merge with cells of the

internal pyramidal layer The cerebral cortex, also known as the cerebral mantle, is the outer layer of neural tissue of the cerebrum of the brain in humans and other mammals. The cerebral cortex mostly consists of the six-layered neocortex, with just 10% consisting of ...

(V); a clear cell free zone represents sublayer 5b of layer V; the

multiform layer The cerebral cortex, also known as the cerebral mantle, is the outer layer of neural tissue of the cerebrum of the brain in humans and other mammals. The cerebral cortex mostly consists of the six-layered neocortex, with just 10% consisting of ...

is wide and has a less clear two sublayer structure; the internal granular layer (IV) is totally absent.

External links

* For Neuroanatomy of Brodmann area 28 visi
BrainInfo
{{Prosencephalon 28 Temporal lobe Medial surface of cerebral hemisphere

Human

Guenon

Distinctive features (Brodmann-1905)

See also

External links