Cardiology

Maintaining heart health may protect against cognitive decline

People with a higher risk of developing cardiovascular disease have increased cognitive decline, including an increase in typical markers of Alzheimer's disease, suggesting that monitoring and controlling for heart disease ...

Alzheimer's disease & dementia

Sleep-disordered breathing tied to brain changes

(HealthDay)—Sleep-disordered breathing (SDB) is associated with changes in the brain, including amyloid deposition in brain regions typically involved in Alzheimer disease, according to a study published online March 23 ...

Neuroscience

How brain networks change with age

As we age, our bodies change, and these changes extend into our brains and cognition. Although research has identified many changes to the brain with age, like decreases in gray matter volume or delayed recall from memory, ...

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Grey matter

Grey matter (or gray matter) is a major component of the central nervous system, consisting of neuronal cell bodies, neuropil (dendrites and both unmyelinated axons and myelinated axons), glial cells (astroglia and oligodendrocytes) and capillaries. Grey matter contains neural cell bodies, in contrast to white matter, which does not and mostly contains myelinated axon tracts. The color difference arises mainly from the whiteness of myelin. In living tissue, grey matter actually has a grey-brown color which comes from capillary blood vessels and neuronal cell bodies.

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