Área de Brodmann 23

Área de Brodmann 23 (BA23) is a region in the brain corresponding to some portion of the posterior cingulate cortex. It lies between Brodmann area 30 and Brodmann area 31 and is located on the medial wall of the cingulate gyrus between the callosal sulcus and the cingulate sulcus. Contents 1 Humano 2 Güenón 3 Macaque 4 Subdivisions 5 Referencias 6 Enlaces externos 7 See also Human This area is knows as ventral posterior cingulate area 23. It is a subdivision of the cytoarchitecturally defined cingulate region of cerebral cortex. In the human it occupies most of the posterior cingulate gyrus adjacent to the corpus callosum. At the caudal extreme it is bounded approximately by the parieto-occipital sulcus. Cytoarchitecturally it is bounded dorsally by the dorsal posterior cingulate area 31, rostrally by the ventral anterior cingulate area 24, and ventrorostrally in its caudal half by the retrosplenial region (Brodmann-1909).  Guenon Brodmann area 23 is a subdivision of the cerebral cortex of the guenon defined on the basis of cytoarchitecture. Brodmann regarded it as topographically and cytoarchitecturally homologous to the combined ventral posterior cingulate area 23 and dorsal posterior cingulate Brodmann area 31 of the human (Brodmann-1909). Distinctive Features (Brodmann-1905): the cortex is relatively thin; smaller cells predominate; the cell density of the multiform layer (VI) is great, producing a distinct boundary with the subcortical white matter; the internal granular layer (IV) is rather well developed; the internal pyramidal layer (V) contains a dense population of round, medium-sized ganglion cells concentrated at the border with layer IV; layers V and VI are narrow with a distinct mutual boundary. Macaque In the macaque the researchers Bonin and Bailey describe an area they term LC which is in agreement with Brodmann area 23. The LC area covers the posterior part of the cingulate gyrus and extends into the cingulate sulcus where, on the inferior wall, it is continuous with the frontal cortex FDL[1]. Subdivisions The area has been subdivided further: In the macaque (Macaca fascicularis) the following subdivisions have been suggested[2]: 23Yo (internal) 23e (external) 23v (ventral), the most caudalventral (inferior) portion and with most highly developed layer IV. An other suggestion is for macaque (mulato macaco)[3] 23un, adjacent to the callosal sulcus thus closest to Brodmann area 30. 23b 23c Further division of 23b is[4].  pv23b, posteroventral part for 23b, main thalamic projections from anterior nuclei. d23b, dorsal part of 23b, weak connections from the anterior nuclei. Referencias ↑ Gerhardt von Bonin, Percival Bailey, The Neocortex of Macaca Mulatta, 1947. ↑ Y. Kobayashi, D. G. Amaral, Journal of Comparative Neurology, 426:339+ ↑ Brent A. Vogt, D. N. Pandya, D. L. Rosene, " Cingulate cortex of the rhesus monkey: Yo. Cytoarchitecture and thalamic afferents", Journal of Comparative Neurology, 262(2):256-270. ↑ H. Shibata, M. Yukie, "Differential thalamic connections of the posteroventral and dorsal posterior cingulate gyrus in the monkey". Revista Europea de Neurociencia. External links For Neuroanatomy of Brodmann area 23 visit BrainInfo See also Brodmann area List of regions in the human brain Telencephalon (telencéfalo, corteza cerebral, hemisferios cerebrales) - editar surcos/fisuras primarias: longitudinal medial, lateral, central, parietoöccipital, calcarina, lóbulo frontal cingulado: giro precentral (corteza motora primaria, 4), surco precentral, giro frontal superior (6, 8), giro frontal medio (46), giro frontal inferior (área de Broca, 44-pars opercularis, 45-pars triangularis), corteza prefrontal (corteza orbitofrontal, 9, 10, 11, 12, 47) lóbulo parietal: surco postcentral, giro postcentral (1, 2, 3, 43), lóbulo parietal superior (5), lóbulo parietal inferior (39-giro angular, 40), precúneo (7), Lóbulo occipital del surco intraparietal: corteza visual primaria (17), cuneus, giro lingual, 18, 19 (18 y 19 abarcar todo el lóbulo) lóbulo temporal: giro temporal transversal (41-42-corteza auditiva primaria), giro temporal superior (38, 22-el área de Wernicke), giro temporal medio (21), giro temporal inferior (20), giro fusiforme (36, 37) lóbulo límbico/giro fornicado: corteza cingulada/giro cingulado, cingulado anterior (24, 32, 33), cingulado posterior (23, 31), istmo (26, 29, 30), giro parahipocampal (corteza piriforme, 25, 27, 35), corteza entorrinal (28, 34) corteza subcortical/insular: rhinencephalon, bulbo olfativo, cuerpo calloso, ventrículos laterales, septum pellucidum, epéndimo, cápsula interna, corona radiata, Formación del hipocampo de la cápsula externa.: giro dentado, hipocampo, subículo ganglios basales: Estriado (núcleo caudado, Putamen), núcleo lentiforme (Putamen, globus pallidus), claustrum, cápsula extrema, amígdala, núcleo accumbens Algunas categorizaciones son aproximaciones, and some Brodmann areas span gyri. 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