Guenon
Brodmann area 28 is a subdivision of the cerebral cortex of the guenon defined on the basis of cytoarchitecture. Brodmann regarded its location adjacent to the hippocampus 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 temporal lobe.
Human
In the human it and the dorsal entorhinal area 34 (H) together constitute approximately the entorhinal area (Brodmann-1909).
Distinctive features (Brodmann-1905)
The molecular layer (I) is unusually wide; the external granular layer (II) contains nests of, for the most part, multipolar cells: the external pyramidal layer (III) contains medium sized pyramidal cells which merge with cells of the internal pyramidal layer (V); a clear cell free zone represents sublayer 5b of layer V; the multiform layer 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 visit BrainInfo
See also
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Brain: telencephalon (cerebrum, cerebral cortex, cerebral hemispheres) |
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| Frontal lobe |
Precentral gyrus ( Primary motor cortex, 4)
Superior frontal gyrus/Frontal eye fields (6, 8, 9), Middle frontal gyrus (46), Inferior frontal gyrus/Broca's area (44-Pars opercularis, 45-Pars triangularis)
Orbitofrontal cortex (10, 11, 12, 47)
Prefrontal cortex, Premotor cortex
Precentral sulcus - Superior frontal sulcus - Inferior frontal sulcus - Olfactory sulcus
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| Parietal lobe |
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| Occipital lobe |
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| Temporal lobe |
Primary auditory cortex ( 41, 42), Superior temporal gyrus ( 38, 22/ Wernicke's area), Middle temporal gyrus ( 21), Inferior temporal gyrus ( 20)
Fusiform gyrus ( 37) Medial temporal lobe ( Amygdala, Parahippocampal gyrus ( 27, 28, 34, 35, 36)
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| Cingulate cortex/gyrus |
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| Interlobar sulci/fissures |
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| White matter tracts |
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| Other |
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| Some categorizations are approximations, and some Brodmann areas span gyri. |
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