Cerebral Cortex

The cerebral cortex is a sheet of neural tissue that is outermost to the cerebrum of the mammalian brain. 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. In preserved brains, it has a gray color, hence the name "grey matter". In contrast to gray matter that is formed from neurons and their unmyelinated fibers, the white matter below them is formed predominantly by myelinated axons interconnecting neurons in different regions of the cerebral cortex with each other and neurons in other parts of the central nervous system. The surface of the cerebral cortex is folded in large mammals, such that more than two-thirds of it in the human brain is buried in the grooves, called "sulci". The phylogenetically most recent part of the cerebral cortex, the neocortex (also called isocortex), is differentiated into six horizontal layers; the more ancient part of the cerebral cortex, the hippocampus (also called archicortex), has at most three cellular

Oxford University Press
United States
Impact factor
6.844 ()
Some content from Wikipedia, licensed under CC BY-SA

Brain structure may be root of apathy

When brain scientists at Oxford University studied apathy, they didn't expect to see less motivated people making more effort. Their results suggest that for some people traditionally perceived as lazy, it's biology - not ...

Nov 13, 2015
popularity1919 comments 0

Thick cortex could be key in Down syndrome

The thickness of the brain's cerebral cortex could be a key to unlocking answers about intellectual development in youth with Down Syndrome. It could also provide new insights to why individuals with this genetic neurodevelopmental ...

Jun 19, 2015
popularity51 comments 1