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The most recently evolved part of the cerebral cortex, composed of six layers of cells, including the lateral surfaces of the frontal, parietal, temporal, and occipital lobes. The older parts of the cerebral cortex, all with fewer than six layers and collectively called the allocortex, are the palaeocortex or olfactory cortex at the front of each temporal lobe, the mesocortex mainly in the cingulate gyrus, and the archaecortex mainly in the hippocampus, which is the oldest of all. In humans, over 90 per cent of the cerebral cortex is neocortex (see also progression index). Also called isocortex, neencephalon, or neopallium. [From Greek neos new + Latin cortex bark or outer layer]

Subjects: Psychology.

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