Libelle of note

The Archicortex includes the Hippocampus (Ammon's horn, Dentate gyrus and Subiculum), Presubiculum, Parasubiculum, Entorhinal cortex, Retrosplenial cortex and a cortical band in the Cingulate gyrus (Stephan 1975; Zilles K, Amunts K 2012 Architecture of the cerebral cortex. In: Mai JK, Paxinos G, eds: The Human Nervous System, 3rd ed. Elsevier, Amsterdam, pp 836-895).

The Paleocortex includes the Olfactory bulb, Retrobulbar region ('Anterior olfactory nucleus'), Olfactory tubercle, Septal and Piriform (BA51) regions and a minor part of the Amygdala (Stephan 1975; Zilles and Amunts 2012).

The Allocortex includes the Paleocortex and the Archicortex (Filimonoff IN 1947 A rational subdivision of the cerebral cortex. Arch Neurol Psychiatry 58:296-311; Stephan H 1975 Allocortex. In: Bargmann W (ed) Handbuch der mikroskopischen Anatomie des Menschen, Vol 4: Nervensystem, Band 9. Springer).

The Mesocortex (Rose M 1927 Der Allocortex bei Tier und Mensch. I. Teil. J Psychol Neurol (Lpz) 34:1-11) comprises the Proisocortex, a transition area between the Isocortex and the Allocortex, and the Periallocortex, the adjoining part of the Allocortex (Filimonoff 1947); also known as Paralimbic cortex (Mesulam 1985). The Periallocortex can further be subdivided into the Peripaleocortex (Claustrum) and the Periarchicortex (Entorhinal, Presubicular and Retrosplenial cortices and part of the Cingulate gyrus; Filimonoff 1947; Zilles and Amunts 2012).

The various Motor areas of the Frontal lobe are known as F1-F7 in monkey brains (see Geyer G, Luppino L, Rozzi G 2012 Motor cortex. In: Mai JK, Paxinos G, eds: The Human Nervous System, 3rd ed. Elsevier, Amsterdam, pp 1012-1035): F1 is the Primary motor cortex, F2 the Caudal part of the Cortex premotorius dorsalis, F3, the the Caudal part of the Cortex premotorius medialis (SMA proper), F4 the Caudal part of the Cortex premotorius ventralis, F5 the Rostral part of the Cortex premotorius ventralis, F6 the Rostral part of the Cortex premotorius medialis (Pre-SMA), and F7 the Rostral part of the Cortex premotorius dorsalis.

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The Cortex ectorhinalis (BA36) is often included as part of the Perirhinal cortex (Ding S-L, Van Hoesen GW 2010 Borders, extent, and topography of human perirhinal cortex as revealed using multiple modern neuroanatomical and pathological markers. Hum Brain Mapp 31:1359-1379) but lies on the other side of the Collateral sulcus.

The Cortex perirhinalis (Perirhinal cortex) is also not included in TA; for description, see Augustinack JC, Huber KE, Stevens AA, et al. (2013 Predicting the location of human perirhinal cortex, Brodmann's area 35, from MRI. Neuroimage 64:32-42).

The Cortex entorhinalis (Entorhinal cortex) is not included in TA; for description, see Braak H, Braak E (1992 The human entorhinal cortex: Normal morphology and lamina-specific pathology in various diseases. Neurosci Res 15:6-31. The Substantia reticularis alba (White reticular substance of Arnold) is the white matter surrounding the darker patches of Layer 2 cell islands. The Verrucae hippocampi (Hippocampal warts) are located above these cell islands and described by Retzius G (1896 Das Menschenhirn: Studien in der makroskopischen Morphologie. Norstedt, Stockholm) and Klingler J (1948 Die makroskopische Anatomie der Ammonsformation. Denkschr Schweiz Naturforsch Ges, Vol 78, Fretz, Zürich). They mark the surface of the Entorhinal cortex.

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Functional subdivision of the Isocortex as described by Mesulam M-M (1985 Patterns in behavioral neuroanatomy. In: Mesulam M-M, ed: Principles of Behavioral Neurology. Davis, Philadelphia, PN, pp 1-70). The Granular isocortex ranges from Hypergranular through Granular to Dysgranular.

The complex Cortex retrosplenialis (Retrosplenial cortex) consists of Periarchicortical (BA26) and Proisocortical (BA29, 30) areas (Braak H 1980 Architectonics of the Human Telencephalic Cortex. Springer, Berlin-Heidelberg-New York; Zilles and Amunts 2012). The TH nomenclature (H4.8.03.122/129) seems to combine these different structures. The Cortex ectosplenialis (Ectosplenial cortex; BA26) has a primitive three-laminar pattern with Molecular, Densocellular and Multiform layers. The Cortex retrosplenialis granularis (Granular retrosplenial cortex; BA29) shows a four-layered structure: Molecular, External and Internal pyramidal and Multiform layers. The Cortex retrosplenialis dysgranularis (Dysgranular retrosplenial cortex; BA 30) shows a further progression of laminar differentiation with an additional (Internal) granular layer.

For further subdivision of the Cortex cingularis (Cingulate cortex) with Layers, see Vogt BA, Palomero-Gallager N (2012) Cingulate cortex. In: Mai JK, Paxinos G, eds: The Human Nervous System, 3rd ed. Elsevier, Amsterdam, pp 934-987.