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Remember those educational cassettes that you’d supposedly learn from overnight? Well, scientific evidence says they're bunk—unless you listen to them while you’re up during the night, that is.

But if you’re actually sleeping and you play something that you've already learned, like a piano melody you've been practicing, you may indeed master it more quickly. So says a study in the journal Nature Neuroscience.

Researchers asked volunteers—with and without musical experience—to learn a few random¹ melodies on a computer keyboard. Then the subjects took a 90-minute nap. When they slipped into slow wave sleep—a stage previously² shown to be associated with memory processing—the researchers softly played back one of the two melodies.

After the subjects woke up, they were able to both melodies more accurately—the helpful effects of a little shuteye, the researchers say. But the volunteers did even better on the ditty they'd heard while snoozing, suggesting sensorimotor skills can be fine-tuned by exposure during sleep.

The scientists stress that the procedure is no shortcut⁴ to becoming Scott Joplin—you still have to put in effort while awake. But a little sleep-time study may help you change your tune³ for the better.

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收听单词发音

1 random
adj.随机的；任意的；n.偶然的(或随便的)行动
参考例句：
The list is arranged in a random order.名单排列不分先后。 On random inspection the meat was found to be bad.经抽查，发现肉变质了。

2 previously
adv.以前，先前（地）
参考例句：
The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。 Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。

3 tune
n.调子；和谐，协调；v.调音，调节，调整
参考例句：
He'd written a tune,and played it to us on the piano.他写了一段曲子，并在钢琴上弹给我们听。 The boy beat out a tune on a tin can.那男孩在易拉罐上敲出一首曲子。

4 shortcut
n.近路，捷径
参考例句：
He was always looking for a shortcut to fame and fortune.他总是在找成名发财的捷径。 If you take the shortcut,it will be two li closer.走抄道去要近2里路。