Navigation Links
Brain's Learning Ability Seems to Recharge During Light Slumber
Date:3/8/2011

TUESDAY, March 8 (HealthDay News) -- Your brain's ability to learn may get recharged during the light, dreamless slumber that accounts for up to half of your night's sleep, according to a new study.

Researchers at the University of California, Berkeley conducted tests on 44 healthy young adults and found strong evidence that bursts of brain waves called sleep spindles may network between important regions of the brain to clear a path to learning.

These spindles -- which are fast pulses of electricity that are generated during non-rapid eye movement (REM) sleep and can occur up to 1,000 times per night -- help to transfer fact-based memories from the brain's hippocampus to the prefrontal cortex's "hard drive."

This enables the hippocampus, which has limited storage space, to take in fresh data, the researchers explained.

"All these pieces of the puzzle tell a consistent and compelling story -- that sleep spindles predict learning refinement," senior author Matthew Walker, an associate professor of psychology and neuroscience, said in a UC Berkeley news release.

Spindle-driven networking is most likely to occur during stage 2 of non-REM sleep, which occurs before the deepest non-REM sleep and dream-inducing REM sleep. Stage 2 non-REM sleep can account for half of a person's sleep.

"A lot of that spindle-rich sleep is occurring in the second half of the night, so if you sleep six hours or less, you are shortchanging yourself. You will have fewer spindles and you might not be able to learn as much," lead author Bryce Mander, a post-doctoral fellow in psychology, said in the news release.

In this study, the researchers subjected 44 healthy young adults to a demanding memorizing task. All participants did equally well. The researchers then divided the group in two, with one half taking an hour and a half nap while the other half stayed awake.

That evening, the entire group was given another round of memorizing tasks. This time, though, those who had remained awake throughout the day had more trouble memorizing the new information. In contrast, those who had napped performed better than the waking group. In addition, the nappers appeared to actually have an improved capability for learning, the study found.

The study team then turned to electroencephalogram tests, which measured electrical activity in the brains of the nappers. These showed that the more sleep spindles the nappers produced, the more refreshed they appeared for learning. In addition, researchers discovered that sleep spindles were linked to brain activity looping between the lobes of the brain that house the hippocampus and prefrontal cortex -- both critical areas for memory.

The study appears Mar. 8 in the journal Current Biology.

More information

The U.S. National Institute of Neurological Disorders and Stroke has more about sleep.

-- Robert Preidt

SOURCE: University of California, Berkeley, news release, March 8, 2011


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Tobacco smoking impacts teens brains, UCLA study shows
2. Brains need love, too
3. Pitt team finds teen brains over-process rewards, suggesting root of risky behavior, mental ills
4. Experts Brains Work Differently Than Amateurs
5. Smoking Scenes in Movies Light Up Smokers Brains
6. New Moms Brains May Grow After Childbirth
7. Colorful brains, cooling lasers, disease-detecting lights and more
8. CU-Boulder study sheds light on how our brains get tripped up when were anxious
9. Menstrual Cramps May Alter Womens Brains
10. Brainstem, spinal cord images hidden in Michelangelos Sistine Chapel fresco
11. In Conversation, Peoples Brains Can Mirror Each Other
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brain's Learning Ability Seems to Recharge During Light Slumber
(Date:10/13/2017)... ... 2017 , ... Lori R. Somekh, founder of the Law Office of ... elder law and special needs planning attorneys. “Membership in ElderCounsel helps our office remain ... to network with elder law attorneys nationwide,” said Somekh. , ElderCounsel ...
(Date:10/13/2017)... ... October 13, 2017 , ... Ellevate Network, the leading ... to advocate for action towards gender equality at their inaugural Summit in New York ... globe, and reached a social audience of over 3 million. To watch the Mobilize ...
(Date:10/13/2017)... VA (PRWEB) , ... October 13, 2017 , ... ... of DevOps and Agile Software Development, has been awarded a contract by the ... Blanket Purchase Agreement (BPA) aims to accelerate the enterprise use of Agile methodologies ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent and San ... using cutting-edge Oventus O2Vent technology. As many as 18 million Americans are ... cessation in breathing. Oral appliances can offer significant relief to about 75 percent ...
(Date:10/12/2017)... ... 2017 , ... The American College of Medical Informatics (ACMI) will present the ... Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual Symposium ... a pioneer in the field of medical informatics, this prestigious award is presented to ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... , Oct. 2, 2017  Eli Lilly and Company ... results for the third quarter of 2017 on Tuesday, ... call on that day with the investment community and ... The conference call will begin at 9 a.m. ... access a live webcast of the conference call through ...
(Date:10/2/2017)... 2, 2017 Halo Labs announces the European launch of ... the HORIZON at MIBio 2017 in Cambridge, U.K ... particulate matter in biopharmaceutical samples with unprecedented speed and sensitivity while ... technique Backgrounded Membrane Imaging. ... HORIZON subvisible particle analysis system ...
(Date:9/28/2017)... Hill-Rom Holdings, Inc. (NYSE: HRC), will host ... webcast on Friday, November 3, 2017, beginning at 7:00 ... approximately 8:30 a.m. (CDT) / 9:30 a.m. (EDT). ... performance and guidance for 2018, Hill-Rom executives will also ... performance, and long-range financial outlook through 2020. ...
Breaking Medicine Technology: