Cerebral cortex  

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The cerebral cortex is a sheet of neural tissue that is outermost to the cerebrum of the mammalian brain. This is the gray area of the brain hence the name. This is caused by the nerves that lack insulation. The cerebral cortex covers the cerebrum and cerebellum. The cerebral cortex is divided into left and right hemisphere. The cerebral cortex is where the information processing takes place. It plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness. It is constituted of up to six horizontal layers, each of which has a different composition in terms of neurons and connectivity. The human cerebral cortex is 2–4 mm (0.08–0.16 inches) thick.

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