Navigation Links
Peaceful Slumber said to Restore Memories

It's not just a matter of physical recharge. Researchers say sleep can rescue memories in a biological process of storing and consolidating them deep in the brain's complex circuitry. Researchers who conducted the experiments said the results may influence how students learn, and someday could be incorporated into treatments for mental illnesses involving memories, such as post-traumatic stress disorder.//

However, other scientists who were not involved in the experiments said additional research is needed into the sleep-memory connection.

In separate studies, scientists trained college-age people to perform specific tasks, then tested them to see how much they recalled after either a night's sleep or several hours awake. The study found that test subjects who listened to a voice synthesizer's murky speech understood more words after a night of sleep than counterparts who were tested just hours after the training, with no sleep.

"We all have the experience of going to sleep with a question and waking up with the solution," said a professor of neurobiology .

Researchers say, it could be that a person acquires so many memories each day that some details are lost in that jumble -- but that the brain sorts and reorganizes the memories during sleep. Or, memories could actually be lost during the day, he said, but reconstituted by the brain during sleep by some process that taps into the general rules the test subjects learned in their voice-recognition training.

The brain's hard drive
James L. McGaugh, director of the Center for the Neurobiology of Learning and Memory, said the voice recognition training is similar to learning a new language and is therefore more complex than being taught to repeat a simple task. In the tests, the subjects never heard the same synthesized word twice.

"These are highly interesting findings that add additional information concerning the affects of sleep on memory," he sai d. "This takes it to a new level."

For example, he said the people trained late at night may have performed better because they went to sleep not long after their training, while their morning trained counterparts were exposed to an entire day of memories before being tested.

In that study, one group was trained at 9 a.m., then tested 12 hours later, while a second group was trained at 9 p.m. and then tested the next morning after a night's sleep. The researchers found that while the people tested at night experienced a 10 percentage point improvement over their pre-training test, those who had a night's sleep had a 19 percentage point improvement over their pre-training test.

In the second study, Harvard Medical School scientists trained 100 subjects ages 18-27 to perform finger-tapping sequences similar to learning piano scales. Their ability to repeat those sequences was then tested at various intervals, including after one and two nights of sleep. The researchers found evidence that memories are consolidated in three stages in a process similar to storing data on a computer's hard drive. The second stage requires sleep, which the Harvard team also found sharpened the subject's performance the next day.

However, when subjects briefly rehearsed a finger-tapping sequence they had learned the previous day just before learning a second exercise, their accuracy on the first sequence suffered when they tried to repeat it on the third day.

But they performed the second exercise reliably -- suggesting that "not all memories are equal," and the order in which they are learned may be important . Researchers thus concluded that further experiments are needed to assess a number of factors that could have influenced the outcomes.

Related medicine news :

1. Anti-Cancer Drug Restores Normal Cell Growth
2. Vitamin E Could Restore Sudden Hearing Loss
3. Running Water Restored In Chinese City
4. Silicone Rubber Flap Restore Speech
5. Restore Ban on Weight Loss Aid, Ephedra – FD
6. Gene Therapy May Help Restore Sight In Congenital blindness
7. Blood Flow to Kidneys Better Restored by Less Invasive Procedures
8. Stress Therapy can Restore Fertility: Study
9. Minimally Invasive Procedure Restores Sagging Facial Skin without Heavy Lifting
10. Two Chemical Compounds Restore Healthy Glucose Levels In Obese Mice
11. Research Extraordinaire To Restore Vision
Post Your Comments:

(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... ... fertility once they have been diagnosed with endometriosis. These women need a treatment ... also require a comprehensive approach that can help for preservation of fertility and ...
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery services, can ... Surgery and to Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey ... cancer. The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under ...
(Date:6/25/2016)... ... , ... "With 30 hand-drawn hand gesture animations, FCPX users can easily customize ... Pixel Film Studios. , ProHand Cartoon’s package transforms over 1,300 hand-drawn pictures into ... Simply select a ProHand generator and drag it above media or text in the ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, ... and his M.D from the David Geffen School of Medicine at UCLA. He trained ... Angeles to complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where ...
(Date:6/25/2016)... ... ... Friday, June 10, Van Mitchell, Secretary of the Maryland Department of Health and Mental ... exemplary accomplishments in worksite health promotion. , The Wellness at Work Awards took place ... BWI Marriott in Linthicum Heights. iHire was one of 42 businesses to receive an ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on ... today announced that patient enrollment in its ongoing ... Duchenne) has exceeded 50% of its 24-patient target. ... in the third quarter of 2016, and to ...
(Date:6/23/2016)... INDIANAPOLIS , June 23, 2016 /PRNewswire/ ... Diabetes Tomorrow,s Leaders Scholarship is any indication, the future ... today online at by the Diabetes ... stand in the way of academic and community service ... scholarship program since 2012, and continues to advocate for ...
(Date:6/23/2016)... June 23, 2016 The vast majority of ... dialysis facility.  Treatments are usually 3 times a week, ... visit, including travel time, equipment preparation and wait time. ... especially grueling for patients who are elderly and frail.  ... nursing and rehabilitation centers for some duration of time. ...
Breaking Medicine Technology: