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Study: Sleeping
on It Helps in Problem Solving
Got a frustrating problem? The age old advice to "sleep on it"
could be well founded, scientists said. Until now the evidence
has been anecdotal, but researchers at the University of
Luebek in Germany have designed an experiment that shows a
good night's sleep can improve insight and problem-solving.
"If you have some newly acquired memories in your brain sleep
acts on these memories, restructures them, so that after sleep
the insight into a problem which you could not solve before
increases," said Dr Jan Born, a neuroscientist, at the
university. "The important thing is that you have to have a
memory representation in your brain of the problem you want to
solve and then you sleep, so it can act on the problem."
To test the
theory, they taught volunteers two simple rules to help them
convert a string of numbers into a new order. There was also
a third, hidden rule, which could help them increase their
speed in solving the problem.
The researchers, who reported their findings in the science
journal Nature, divided the volunteers into two groups, half
were allowed to sleep after the training while the remainder
were forced to stay awake.
Born and his team
noticed that the group that had slept after the training were
twice as likely to figure out the third rule as the other
group. But Born admitted that he and his team don't know how
restructuring of memories occurs or what governs it.
Pierre Maquet and Perrine Ruby of the University of Liege in
Belgium said the experimental evidence supports the anecdotal
suggestions that sleep can stimulate creative thinking.
There you have it: scientific evidence of what you already
knew!
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