◀ featured
also in: featured |
 

Why poor sleep and forgetfulness plague the ageing brain

Original story at Nature News & Comment• 3 mentions • 1 year ago

Nature News & Comment 1 year ago

Ageing brains show a weakening in brain waves associated with deep sleep (right) compared with younger adults (left), with consequent memory impairments.Deterioration of a specific brain region impairs sleep quality as people age, leading to poorer memory retention, according to research published today in Nature Neuroscience1. Ageing is associated with the gradual loss of brain cells, sleep disturbances and declining memory function, but how these factors are related to each other has been unclear.Neuroscientist Bryce Mander at the University of California, Berkeley, and his colleagues recruited 33 healthy adults — 18 around the age of 20, and 15 ranging from late sixties to late seventies — all with normal mental function, and asked them to memorize a list of word pairs.The participants were asked to recall some of the word pairs ten minutes later, then left to sleep overnight while the researchers recorded the electrical activity of their brains. The next morning, volunteers were asked to recall selected words from the list again while having their brains scanned.In keeping with earlier studies, the older adults performed less well than the younger ones on the memory test, and showed significant reductions in the slow brain waves associated with deep sleep.
 
 
◀ featured
also in: featured |
 

What they're saying:

28 Jan
Nature News&Comment @NatureNews
RT @mocost: ... and here's my @NatureNews story about it: Why poor sleep and forgetfulness plague the ageing brain http://t.co/5m2I4eCA
28 Jan
Body In Mind @bodyinmind
RT @mocost: Age-related shrinkage of the medial prefrontal cortex disrupts sleep & impairs memory retention http://t.co/8z2JLiT3 By ...
27 Jan
Mo Costandi @mocost
Age-related shrinkage of the medial prefrontal cortex disrupts sleep & impairs memory retention http://t.co/8z2JLiT3 By me for @NatureNews