If you’re trying to commit a set of items to memory, you may want to give your brain a bit of caffeine. But how you time it matters, finds a new study out today in Nature Neuroscience. The researchers found that giving people caffeine after they memorized a series of pictures significantly boosted their ability to remember the subtler details, compared to people who’d been given dummy pills. Before you down a six-shot Americano, though, be aware that there’s a sweet spot: A 200-milligram dose of caffeine – about the amount in a large cup of coffee – was the only one to do the trick.
如果你想记住什么事情,你或许该给自己的大脑一些咖啡因。但是你在何时给它咖啡因相当重要,这是《自然神经科学》(Nature Neuroscience)在1月13日发布的一份新研究报告中所发现的。研究者们发现,在人们记住一系列图片之后给予他们咖啡因(相较于给予安慰剂的对比组),能够极大地提高记住更细微细节的能力。不过,在你狂灌六杯美式咖啡之前,请先记住最有效剂量是:200毫克的咖啡因——大概是一大杯咖啡中的咖啡因含量——才能起到这个效果。
The researchers had participants – who were not regular caffeine consumers – try to memorize a series of pictures. Afterwards, they were given a caffeine pill or a placebo (dummy) pill. Twenty-four hours later, when the caffeine was fully out of their systems, they were asked to determine which pictures in a new set had also been shown the day before. The tricky part was that some of the new items were similar but not identical to the old ones, meaning that the participants had to recall the initial items in some amount of detail.
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