Archicortex

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Brain: Archicortex
NeuroNames	hier-152
Dorlands/Elsevier	a_57/12150314

Template:Expert-portal

Archicortex is basically categorized under allocortex. It is any cortex with fewer than six areas, specifically three layered hippocampal cortexes. It is necessary for hippocampus formation.

The archicortex is a portion of the cerebral cortex that, with the paleocortex, develops in association with the olfactory system, and which is phylogenetically older than the neocortex and lacks its layered structure. The embryonic archicortex corresponds to the cortex of the dentate gyrus and hippocampus in mature mammals. Being part of the limbic system, it has functions related to emotions and formation of memory. Signals being sent from the limbic lobe to the hippocampal formations can go via the archicortex as an intermediate.

v • d • e Human brain: Limbic system
Diencephalon	Hypothalamus · Mammillary body
Telencephalon: limbic lobe	Archicortex: Hippocampal formation (Hippocampus, Alveus of the hippocampus, Subiculum, Perforant path, Fimbria, Dentate gyrus) · Paraterminal gyrus · Supracallosal gyrus Cingulate gyrus · Parahippocampal gyrus · Uncus
Telencephalon: other	Amygdala · Nucleus accumbens · Orbitofrontal cortex septum: Septum pellucidum, Septal nuclei

v • d • e Brain: telencephalon (cerebrum, cerebral cortex, cerebral hemispheres)
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) Precentral sulcus - Superior frontal sulcus - Inferior frontal sulcus - Olfactory sulcus
Parietal lobe	Somatosensory cortex (Primary (1, 2, 3, 43), Secondary (5)), Precuneus (7m) Parietal lobules (Superior (7l), Inferior (40)), Angular gyrus (39) Intraparietal sulcus, Marginal sulcus
Occipital lobe	Primary visual cortex (17), (Cuneus, Lingual gyrus, Lateral occipital gyrus (18, 19)) Calcarine fissure
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)
Cingulate cortex/gyrus	Subgenual area (25), Anterior cingulate (24, 32, 33), Posterior cingulate (23, 31), Retrosplenial cortex (26, 29, 30) Callosal sulcus
Interlobar sulci/fissures	lateral: Central (frontal+parietal), Lateral (frontal+parietal+temporal), Parietoöccipital medial: Medial longitudinal, Cingulate (frontal+cingulate), Collateral (temporal+occipital)
White matter tracts	Commissural fibers - Association fibers Internal capsule (Anterior limb, Genu, Posterior limb), Corona radiata, External capsule, Lamina terminalis, Extreme capsule, Semioval center Olfactory tract, Terminal stria
Other	Insular cortex gray: Olfactory bulb, Anterior olfactory nucleus, Basal optic nucleus of Meynert, Substantia innominata, Anterior perforated substance Corpus striatum - Limbic lobe
Some categorizations are approximations, and some Brodmann areas span gyri.