News tagged with white matter

Related topics: brain , magnetic resonance imaging , nerve cells , brain cells , brain injury

Brain aging is conclusively linked to genes

For the first time in a large study sample, the decline in brain function in normal aging is conclusively shown to be influenced by genes, say researchers from the Texas Biomedical Research Institute in San Antonio and Yale ...

Nov 04, 2013
popularity 4.6 / 5 (11) | comments 0 | with audio podcast

Brain atrophy seen in patients with diabetes

(HealthDay)—Brain atrophy rather than cerebrovascular lesions may explain the relationship between type 2 diabetes mellitus (T2DM) and cognitive impairment, according to a study published online Aug. 12 ...

Aug 23, 2013
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How the brain strings words into sentences

(Medical Xpress) -- Distinct neural pathways are important for different aspects of language processing, researchers have discovered, studying patients with language impairments caused by neurodegenerative ...

Nov 24, 2011
popularity 4.7 / 5 (7) | comments 5 | with audio podcast

White matter

White matter is one of the two components of the central nervous system and consists mostly of myelinated axons. White matter tissue of the freshly cut brain appears pinkish white to the naked eye because of myelin is composed largely of lipid and a few percent of capillaries. Its white color is due to its usual preservation in formaldehyde. A 20 year-old male has around 176,000 km of myelinated axons in his brain.

The other main component of the brain is grey matter (actually pinkish tan due to blood capillaries). A third colored component found in the brain that appears darker due to higher levels of melanin in dopaminergic neurons than its nearby areas is the substantia nigra.

This text uses material from Wikipedia licensed under CC BY-SA