It’s no surprise to me that another study
confirms what I’ve long known to be true: naps are magic bullets to dramatically boost and restore
brain power.
- The more hours
we spend awake, the more sluggish our minds become: pulling an all-nighter decreases
the ability to cram in new facts by nearly 40 percent, due to a shutdown of certain brain regions
during sleep deprivation.
- Sleep is needed
to clear the brain’s short-term memory
storage and make room for new information.
- Fact-based memories are temporarily stored in the brain’s hippocampus region before being
sent to the brain’s prefrontal cortex, which may have more storage space. So if
your “inbox” in your hippocampus is full, until you sleep to move those facts
onward, you cannot take any more facts in!
Sounds pretty simple. But
here’s the really cool part: Clearing out this clutter in the hippocampus to make room for new facts happens during Stage
2 non-REM sleep, which takes place between deep sleep (non-REM) and the
dream state known as Rapid Eye Movement (REM). For a long time we didn’t
know the scientific reason for this stage, but this helps explains why we spend at least half of our sleeping hours in Stage 2.
The Berkeley researchers are
now going to find out whether the reduction of sleep experienced by people as
they get older is related to the documented decrease in their ability to learn as we age. The older we get, the
more challenging it becomes to pack a lot of new information into our heads.
And it becomes more challenging to get that restful sleep, too, given the number
of sleep-disrupting health
conditions that can afflict us in our later years.
Another win for the nappers.
After all, age should be about
wisdom—new and old.
Sweet Dreams,
Michael J. Breus, PhD, DABSM
The Sleep Doctor™
www.thesleepdoctor.com
Follow me on Twitter: http://twitter.com/thesleepdoctor
Click here to order Dr. Breus's book, Beauty Sleep, on Amazon or Kindle, or here to buy it for the Barnes & Noble Nook.




It seems that the optimal duration of napping is a topic of lots of debate. With this study in mind, what is your opinion on the optimal duration for napping?
Thanks - Neo
Ab incunabulis
http://neo-lifeinthenicu.blogspot.com
Posted by: Neo-lifeinthenicu.blogspot.com | March 24, 2010 at 06:22 AM
I'm 82 and normally sleep 7-1/2 to 8 hours per night, and on many days also take a nap. It puzzles me to periodically read that old people get less sleep and even that we NEED less sleep. I've worked with computers for almost 30 years now and learn new things all the time. It's my PHYSICAL energy that lags, not the mental part. Is that because I don't have trouble sleeping?
Posted by: Mary | March 11, 2010 at 06:01 PM