You may not be able to learn a foreign language in your sleep, but you can strengthen certain memories, according to a study in the journal Science.
The study, led by researchers at Northwestern University, found that hearing certain sounds during a nap helped people remember information associated with those sounds once they woke up.
"They were a little bit better, a little more accurate," says John Rudoy, a graduate student at Northwestern and the study's lead औथोर
http://www.npr.org/templates/story/story.php?storyId=120573613