McAlester News-Capital, McAlester, OK

Community News Network

October 18, 2013

Sleep: The ultimate brainwasher?

(Continued)

Many neurological diseases — from Alzheimer's disease to stroke and dementia — are associated with sleep disturbances, Nedergaard notes. The study suggests that lack of sleep could have a causal role, by allowing the byproducts to build up and cause brain damage. "This could open a lot of debate for shift workers, who work during the nighttime," Nedergaard predicts. "You probably develop damage if you don't get your sleep."

One unknown, however, is whether the need to remove waste products actively regulates sleep — whether, for example, the buildup of metabolic byproducts makes us sleepy. Researchers also wonder how the fluid-filled channels change shape during sleep, and whether clearing waste actually improves the function of neurons.

Nor are other researchers certain that cleansing is sleep's sole core function. No one function of sleep necessarily rules them all, says sleep scientist Derk-Jan Dijk of the University of Surrey in the United Kingdom. "Sleep probably has many functions," he says, just as the weekend is variously for shopping, socializing, and cleaning the house.

But now that Nedergaard and her colleagues have identified this nightly brainwashing in mice, Czeisler says, scientists can investigate whether it occurs in all species, and to what extent. "One could imagine that different species have evolved different additional functions of sleep to suit their different habitats, … but this will help resolve if there is some shared function of sleep across species," he concludes.

This is adapted from ScienceNOW, the online daily news service of the journal Science. http://news.sciencemag.org

Text Only | Photo Reprints
Community News Network
Seasonal Content
AP Video
Judge Ponders Overturning Colo. Gay Marriage Ban Airlines Halt Travel to Israel Amid Violence NYPD Chief Calls for 'use of Force' Retraining VA Nominee McDonald Goes Before Congress Bush: Don't Worry, Sugarland Isn't Breaking Up US Official: Most Migrant Children to Be Removed Police Probing Brooklyn Bridge Flag Switch CDC Head Concerned About a Post-antibiotic Era Raw: First Lady Says `Drink Up' More Water Courts Conflicted Over Healthcare Law Holder Urges Bipartisanship on Immigration Raw: Truck, Train Crash Leads to Fireball US Airlines Cancel Israel Flights Obama Signs Workforce Training Law Crash Victims' Remains Reach Ukraine-held City Diplomatic Push Intensifies to End War in Gaza Cat Fans Lap Up Feline Film Festival Michigan Plant's Goal: Flower and Die Veteran Creates Job During High Unemployment
NDN Video
Justin Bieber In Calvin Klein Underwear Shoot Samsung Pre-Trolls The IPhone 6 With New Ad Jimmy Kimmel Introduces His Baby Girl Swim Daily, Nina Agdal in the Cook Islands Guilty Dog Apologizes to Baby for Stealing Her Toy Prince George Turns 1 and is Already a Trendsetter Train Collides With Semi Truck Carrying Lighter Fluid Kanye West Tells-All on Wedding in "GQ" Interview Tony Dungy Weighs in on Michael Sam Scarlett Johansson Set To Marry In August New Star Wars Episode XII X-Wing Revealed Obama: Putin must push separatists to aid MH17 probe Michigan inmates no longer allowed to wear orange due to 'OITNB' Adam Levine Ties the Knot Sebastian The Ibis Walks Beautiful Bride Down The Aisle | ACC Must See Moment NASA Ceremony Honors Moon Walker Neil Armstrong Faces of Souls Lost in Malaysian Plane Crash 105-year-old woman throws first pitch Man Creates Spreadsheet of Wife's Reasons for Turning Down Sex 'Weird Al' Is Wowed by Album's Success
Parade
Magazine

Click HERE to read all your Parade favorites including Hollywood Wire, Celebrity interviews and photo galleries, Food recipes and cooking tips, Games and lots more.