Alzheimer's disease & dementia

Study looks at brain lesions as early predictors of dementia

Researchers at Western University's Schulich Medicine & Dentistry have identified how specific lesions in the brain could be used as early predictors of cognitive decline and identify those who are at high risk of developing ...


Assessing connections in the brain's reading network

When we read, information zips between language processing centers in different parts of the brain, traveling along neural highways in the white matter. This coordinated activity allows us to decipher words and comprehend ...

Psychology & Psychiatry

Anxiety and PTSD linked to increased myelin in brain's gray matter

A recent study links anxiety behavior in rats, as well as post traumatic stress disorder (PTSD) in military veterans, to increased myelin—a substance that expedites communication between neurons—in areas of the brain ...

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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