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Sleeping soundly 'boosts memory'
BBC News ^ | July 14, 2008

Posted on 07/14/2008 3:42:04 AM PDT by Schnucki

A refreshing night's sleep may be the best way to boost memory, a study suggests.

Researchers found sleep appears to have a dramatic impact on the way the brain functions the next day.

It appears to strengthen connections between nerve cells in the brain - a process key to both learning and memory.

The University of Geneva study was presented to a Federation of European Neuroscience Societies conference.

The researchers studied a group of volunteers who were taught a new skill or shown images they would later have to remember.

The skill tasks included trying to follow a moving dot on a computer screen using a joy stick.

One group of participants was then allowed to sleep normally for eight hours, while others were deprived of sleep or only permitted a nap.

The next day they were asked to repeat the tasks or recall the images while their brains were scanned using a technique known as functional magnetic resonance imaging (fMRI).

Those who had slept properly performed better, and this was reflected in their brain activity.

Lead researcher Dr Sophie Schwartz said: "Our results revealed that a period of sleep following a new experience can consolidate and improve subsequent effects of learning from the experience.

"This improvement comes from changes in brain activity in specific regions that code for relevant features of the learned material."

Dr Schwartz said sleep helped the brain consolidate learned experiences and harden up weak memories which otherwise might fade in time.

However, she said much more research was required. For instance, it was unclear how much sleep was required to have optimum impact.

"We now want to know which brain circuits are involved in these learning effects during the night and if we can experimentally enhance such effects.

"We want to assess how sleep disorders affect emotional and cognitive functioning, and what are the biological factors responsible for these effects."

Important part of life

Dr Neil Stanley, a sleep expert at Norfolk and Norwich University Hospital, said the findings proved just how important it is to get a good night's sleep.

However, a recent poll of 4,000 adults in the UK found only one in five sleep for eight hours a night.

Dr Stanley said: "Sleep is not just a waste of time, it is a very active time and we need it for things like memory and learning.

"During the day we acquire information, but at night we sort that information.

"People complain about sleep deprivation, but now with the 24/7 society and information overload we need our sleep more than ever."


TOPICS: Culture/Society
KEYWORDS: brain; memory; psychology; sleep

1 posted on 07/14/2008 3:42:05 AM PDT by Schnucki
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To: Schnucki

If sleeping soundly boosts memory then why is it so difficult to remember dreams?


2 posted on 07/14/2008 3:44:36 AM PDT by Man50D (Fair Tax, you earn it, you keep it!)
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To: Schnucki
Sleeping soundly 'boosts memory'

Does it matter that I need a six-pack to be able to sleep soundly?

3 posted on 07/14/2008 3:51:02 AM PDT by Soliton (Investigate, study, learn, then express an opinion)
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To: Schnucki
How does one go about cashing in on these studies?  I knew this 30 years ago.
4 posted on 07/14/2008 4:00:28 AM PDT by HawaiianGecko
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To: Schnucki
These results are PROFOUND!

Upcoming studies:

Sleeping soundly significantly reduces tiredness.

Sleeping soundly increases risk of snoring.

5 posted on 07/14/2008 4:02:25 AM PDT by C210N (The television has mounted the most serious assault on Republicanism since Das Kapital.)
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To: Schnucki; All
Another bit of bogus science. The alternative hypothesis, which they ignored, is that if you are sick, maybe the illness affects both sleeping and memory.

There are fact suggesting that my alternative hypothesis is at least as good as their jump to conclusion that you just need to sleep better. One of the tests folks might get for chronic Lyme is a SPECT scan to show whether or how much the bugs have invaded the brain.

I really hate it when supposed scientists jump to a blame-the-patient idea, in this case the patient should just take care to sleep better; especially when so many auto-immune diseases (currently in epidemic status) have associated sleep disorders.

Keeping a healthy person from sleeping might have the same result as encountered by somebody with lupus, or the pains of arthritis. But, the fix is no where near as easy.

6 posted on 07/14/2008 8:19:09 AM PDT by slowhandluke (It's hard work to be cynical enough in this age)
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