Doctor insights on:
Can Grey Matter Regenerate
How is damage to the CNS different from the damage to the PNS?
Also, why can grey matter not be regenerated, but white matter can?
No: Gray matter cells in the brain do not divide after fetal development. If they are damaged or loss, the body cannot replace them. This is why many strokes are permanent and why injury to the head can be so damaging. ...Read more
Varies: There are many patterns and ages for this to be noticeable. Generally the first thing that becomes a bit of a problem is the remembering of names and faces. Later word search gets more difficult. And there is the classic "where did i leave my (keys, car, wallet, coffee cup, etc.)? This is a slow evolution over many years in the elderly (you are way too young). ...Read more
WM/GM: Both are parts of the central nervous system. White matter is made of glial cells & myelinated axons that transmit nerve signals. Grey matter is made of neurons. The wm coordinates communication between different parts of the brain. The gm is involved in cognition & processing of information, muscle control, sensory perception, memory, emotions, speech. ...Read more
What makes grey matter grey a white matter white? In other words, what is the difference between grey and white matter?
Cells vs. myelin: Gray matter mostly consists of the cell bodies of neurons, while white matter contains myelinated axons. Axons are like connecting wires, and myelin (which is whitish in color) serves as the insulation. For more details see: http://en.Wikipedia.Org/wiki/grey_matter and http://en.Wikipedia.Org/wiki/white_matter. ...Read more
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