if you see a student napping (打瞌睡) in the library, don’t roll your eyes.new research from the university of california,
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“sleep not only rights the wrong of extended wakefulness but it moves you beyond where you were before you took a nap.”said matthew walker, an assistant professor of psychology at uc berkeley and the lead investigator of uc berkeley sleep studies.
the latest study suggests that the brain may need sleep to process shortterm memories, creating“space”for new facts to be learned.in their experiment,39 healthy adults were divided into two groups—nap and nonap. at last it showed that the nappers improved their scores by 10 percent on average after sleeping; the scores of those who didn’t nap actually dropped by 10 percent.
the results support previous data from the same research team that staying up all night—a common practice at college during midterms and finals—decreases the ability to memorize new facts by nearly 40 percent, due to a shutdown of brain regions for lack of sleep, said walker.
“sleep is needed to clear the brain’s shortterm memory storage and make room for new information.”said
however, professor derkjan dijk, the director of the surrey sleep research centre, said that there was no clear evidence that daytime napping offered a distinct advantage over sleeping soundly just once over 24 hours.
“the sleepwake cycle is not as fixed as we might think—we have the capability to sleep in different ways.”said professor derkjan dijk.
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