She was a sleep-walker, and had fainting-fits.
她是一个梦游者，还有昏厥的症状。
What, sick, a sleep-walker, and wasted away in my house!
什么，梦游症，思乡病，在我家里日渐消瘦!
Like many men, Richard had been a zombie, a daytime sleep-walker.
像很多男人一样，理查德曾经是个呆子，一个白日里的夜游人。
Matthew Walker, a professor of psychology and neuroscience at the University of California, Berkeley, and his colleagues recruited 27 women and 17 men to come to the sleep lab.
加州大学伯克利分校心理与神经系统科学教授马修·沃克尔和同事招募了27名女性志愿者和17名男性志愿者，在睡眠实验室进行实验。
The study results suggest that sleep before learning may be important, too, just as experts have known that sleep after learning is crucial to solidify information learned, Walker says.
沃克说：这项研究的结果表明，学习前的睡眠可能也是很重要的，正如专家们都知道，学习后的睡眠是非常重要的，这可以巩固学到的信息。
The benefits to memory of a nap, says Dr Walker, are so great that they can equal an entire night’s sleep.
沃克博士说，小睡的好处非常大，甚至抵得过一整夜的睡眠。
Prof Walker and his team will go on to investigate whether the reduction of sleep experienced by people as they get older is related to the documented decrease in our ability to learn as we age.
沃克教授和他的团队将继续进行研究，看看人们经历的随着年龄增长而减少睡眠是否与已经证明的随着年龄增长而降低学习能力有关。
These findings reinforce the researchers' hypothesis that sleep is needed to clear the brain's short-term memory storage and make room for new information, said Prof Walker.
沃克教授说，这些研究结果加强了研究人员的假设——清理大脑短期储存的记忆，为新信息留出位置需要睡眠。
Dr Matthew Walker, who led the study, said: "We know that during REM sleep there is a sharp decrease in norepinephrine, a brain chemical associated with stress."
这项研究的领导者马修·沃克博士说：“我们都知道，在REM睡眠阶段，去甲肾上腺素会急剧下降，而去甲肾上腺素是大脑中一种与压力有关的化学物质。”
In the latest study, Prof Walker and his team have broken new ground in discovering that this memory - refreshing process occurs when nappers are engaged in a specific stage of sleep.
在最新的研究中，沃克教授和他的团队有了新的突破。他们发现，打盹的人进入睡眠的特殊阶段时，才会发生这种记忆刷新的过程。
In the latest study, Prof Walker and his team have broken new ground in discovering that this memory - refreshing process occurs when nappers are engaged in a specific stage of sleep.
在最新的研究中，沃克教授和他的团队有了新的突破。他们发现，打盹的人进入睡眠的特殊阶段时，才会发生这种记忆刷新的过程。
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