A key aspect was the caffeine was administered after the memory task, rather than before it, which ensures that other caffeine-related factors, like attention, anxiety or energy are not what’s driving the phenomenon.
重要的一点是,咖啡因是在记忆力任务之后给予的,而不是之前,这确保了其他和咖啡因相关的因素,如注意力、焦虑或能量等,并不是造成这种现象的原因。
Yassa added that what’s really interesting is that the study focuses on a more detailed form of memory. “If we used a standard recognition memory task without these tricky similar items, we would have found no effect of caffeine, ” he said. “However, using these items requires the brain to make a more difficult discrimination — what we call pattern separation, which seems to be the process that is enhanced by caffeine in our case.”
亚萨补充表示,真正有趣的是,这项研究专注于记忆力的一个更为细枝末节的形式。“如果我们采用一种标准辨识记忆力任务,没有这些个容易混淆的相似点,我们可能发现的结果是,咖啡因没有效果,”他说,“而采用这些相似图片之后,就要求大脑做出更困难的辨识——这就是我们所称之为的‘模式分辨’,在我们的研究中,咖啡因似乎就是加强了这一过程。”
Now the and his team just have to unravel why the caffeine effect occurs at all, and which brain mechanisms are responsible. “We can use brain-imaging techniques to address these questions, ” said Yassa. “We also know that caffeine is associated with healthy longevity and may have some protective effects from cognitive decline like Alzheimer’s disease. These are certainly important questions for the future.”
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