Anonymous
Anonymous asked in Science & MathematicsBiology · 8 years ago

Cerebral Cortex vs. Neocortex?

What is the different between the Cerebral Cortex and the Neocortex? What are their functions, where are they, how do they differ?

Update:

They are definitely not synonyms..

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  • Anonymous
    8 years ago
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    The neocortex is the newest part of the cerebral cortex to evolve (hence the prefix "neo"); the other parts of the cerebral cortex are the paleocortex and archicortex, collectively known as the allocortex. The cellular organization of the allocortex is different from the six-layer structure mentioned above. In humans, 90% of the cerebral cortex is neocortex.

    The cerebral cortex and the neo cortex are the same thing. The cerebral cortex is the outer layer of the brain. It consists of 6 cell layers. It was that last part of the brain to evolve, hence the term 'neocortex'. The cortex covers the whole brain, not one side or the other. It is the crinkley surface that you see in pictures of the brain (many convolutions; gyri and sulci).

    The cortex is associated with 'higher' functions; consciousness, language understanding and production, cognition, abstraction, problem solving, motor and sensory integration and so-on. Things like love and empathy are more likely to be associated with the limbic regions, which are considered the 'emotional core' of the brain.

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  • Lauren
    Lv 4
    4 years ago

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    The cerebral cortex is a structure within the brain that plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness. In dead, preserved brains, the outermost layer of the cerebrum has a grey color, hence the name grey matter. Grey matter is formed by neurons and their unmyelinated fibers, whereas the white matter below the grey matter of the cortex is formed predominantly by myelinated axons interconnecting different regions of the central nervous system. The human cerebral cortex is 2-4 mm (0.08-0.16 inches) thick. The surface of the cerebral cortex is folded in large mammals, wherein more than two-thirds of the cortical surface is buried in the grooves, called "sulci." The phylogenetically most recent part of the cerebral cortex, the neocortex, is differentiated into six horizontal layers; the more ancient part of the cerebral cortex, the hippocampus (also called archicortex), has at most three cellular layers, and is divided into subfields. Relative variations in thickness or cell type (among other parameters) allow us to distinguish between different neocortical architectonic fields. The geometry of these fields seems to be related to the anatomy of the cortical folds, and, for example, layers in the upper part of the cortical grooves (called gyri) are more clearly differentiated than in its deeper parts (called sulci).

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