Grey matter (or gray matter) (lat. Substantia grisea) is a major component of the central nervous system, consisting of neuronal cell bodies, neuropil (dendrites andmyelinated as well as unmyelinated axons), glial cells (astroglia and oligodendrocytes) and capillaries. Grey matter is distinguished from white matter, in that grey matter contains numerous cell bodies and relatively few myelinated axons, while white matter is composed chiefly of long-range myelinated axon tracts and contains relatively very few cell bodies.[1] The color difference arises mainly from the whiteness of myelin. In living tissue, grey matter actually has a very light grey color with yellowish or pinkish hues, which come from capillary blood vessels and neuronal cell bodies.[2]
Grey matter contains most of the brain's neuronal cell bodies. The grey matter includes regions of the brain involved in muscle control, and sensory perception such as seeing and hearing, memory, emotions, speech, decision making, and self-control. While 20% of all oxygen taken in by the body goes to the brain, 95% of that goes specifically into the grey matter.[3]
MINIMUM
Windows 98/2000/ME/XP
Pentium III or AMD Athlon 800MHz Processor
256MB RAM
2GB Hard Disk Space
Nvidia TNT2, GeForce 1, 2 or 3, ATI Radeon 7000, 7200, 7500 or 8500, or Matrox G450 Video Card
DirectX Compatible Sound Card
DirectX 9
MAXIMUM
Windows 7/Vista (32 or 64 bit)
Intel i7 Quad Core 2.8Ghz or AMD equivalent
3GB System RAM (High)
30 GB Hard dDisk Space
nVidia GeForce 9800 GTX / ATI Radeon HD4850 Video Card
Direct X 9.0 compatible supporting Dolby Digital Live
DirectX 9.0 - DirectX 11
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