研究者们让不经常摄入咖啡因的受试者尝试记住一系列图片。然后给予他们咖啡因药丸或安慰剂。24小时之后,咖啡因完全排出体外,这些受试者被要求在一套新的图片中挑出哪些图片在前一天出现过。这里容易出错的地方在于,有些图片只是和之前的图片相类似,但并不完全一样,这意味着受试者必须要回忆起原来那些图片上的某些细节。
It turned out that people in the caffeine group were much better than their non-caffeinated counterparts at recognizing the new items that were similar but not the same as old ones. And this is cool because it suggests that caffeine may influence how the brain consolidates memories.
结果证明,在辨识和旧有图片类似却又不尽相同的图片方面,咖啡因组的表现比对照组的表现要好得多。这个结果很酷,因为它表明,咖啡因能影响大脑巩固记忆的方式。
“We’ve always known that caffeine has cognitive-enhancing effects, ” said study author Michael Yassa, “but its particular effects on strengthening memories and making them resistant to forgetting has never been examined in detail in humans. We report for the first time a specific effect of caffeine on reducing forgetting over 24 hours.”
“我们一直都知道,咖啡因有提高认知力的效果,”该研究报告的作者迈克尔·亚萨(Michael Yassa)说,“但其对加强记忆力、防止遗忘的特定效果却从未在人类身上加以详细地验证过。我们是首次对24小时内咖啡因对减少遗忘所产生的特定效果进行汇报。”
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