Área de Brodmann 8

Contenido 1 Humano 2 Güenón 3 Enlaces externos 4 Ver también Área humana de Brodmann 8, o BA8, es parte de la corteza frontal en el cerebro humano. Situated just anterior to the premotor cortex (BA6), it includes the frontal eye fields (so-named because they are believed to play an important role in the control of eye movements). Guenon The term Brodmann area 8 refers to a cytoarchitecturally defined portion of the frontal lobe of the guenon. Located rostral to the arcuate sulcus, it was not considered by Brodmann-1909 to be topographically homologous to the intermediate frontal area 8 of the human. Características distintivas (Brodmann-1905): compared to Brodmann area 6-1909, área 8 has a diffuse but clearly present internal granular layer (IV); sublayer 3b of the external pyramidal layer (III) has densely distributed medium sized pyramidal cells; the internal pyramidal layer (V) has larger ganglion cells densely distributed with some granule cells interspersed; the external granular layer (II) is denser and broader; cell layers are more distinct; the abundance of cells is somewhat greater. The area is involved in the management of uncertainty. A functional magnetic resonance imaging study demonstrated that that brodmann area 8 activation occurs when test subjects experience uncertainty, and that with increasing uncertainty there is increasing activation. (Brain Res Bull. 2005 Nov 15;67(5):403-12. Epub 2005 Jul 7. Variants of uncertainty in decision-making and their neural correlates.Volz KG, Schubotz RI, von Cramon DY.) An alternative interpretation is that this activation in frontal cortex encodes hope, a higher-order expectation positively correlated with uncertainty (Chew and Ho, J Risk and Uncertainty 8(3):267-288. 1994). External links For Neuroanatomy of this area visit BrainInfo See also Brodmann area List of regions in the human brain This neuroscience article is a stub. Puedes ayudar a la Wiki de Psicología expandiéndola. telencéfalo (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, y algunas áreas de Brodmann abarcan giroscopios. Esta página utiliza contenido con licencia Creative Commons de Wikipedia (ver autores).

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