Cerebral cortex, prefrontal, evo lution, cytoarchitecture, neurotransmitter. Corteza cerebral neocortex corteza cerebral prueba. The cerebral cortex is composed of a complex association of tightly packed neurons covering the outermost portion of the brain. Certain cortical regions have somewhat simpler functions, termed the primary cortices. In humans, 90% of the cerebral cortex is neocortex. Organizacion intrinseca y analisis comparativo del neocortex f. This is typically 2 3 mm thick, covering the gyri and sulci. The cerebral cortex and the neo cortex are the same thing. Lying right under the meninges, the cerebral cortex divides into four lobes. Chapter 11 the cerebral cortex general organization. It was that last part of the brain to evolve, hence the term neocortex.