The researchers told New Scientist magazine: "Traditionally, time devoted to daytime napping has been considered counterproductive ."

研究人员在接受《新科学家》杂志采访时说："人们一直认为白天小睡起不到什么积极作用。"

But they added that it now seemed that sleep was "an important mechanism for memory formation".

但是，现在看来，睡眠"是形成记忆的一个重要途径"。

The study was published in the journal Neurobiology of Learning and Memory, the magazine said.

据《新科学家》杂志介绍，此项研究结果发表在《学习和记忆神经生物学》上。