She was a sleep-walker, and had fainting-fits.

她是一个梦游者，还有昏厥的症状。

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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。

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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。

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"You don't have to restore brain cells to restore sleep, " said Dr Walker who described their aim as "jump-starting" the system.

BBC: Boosting sleep 'may slow memory rot'