(Sound effect: Coffee shop) Yeah--a full-caf venti latte with a memory spurt.
I'm Bob Karson with the discovery files--new advances in science and engineering from the National Science Foundation.
Caffeine fans research from Johns Hopkins University shows the caffeine in that drink of yours could help memory. The study took a new approach to uncover a specific effect on memory retention that may have been missed in previous tests.
Participants selected for this double-blind study did not regularly use caffeine products. Half were given a 200-milligram caffeine tablet--the other half a placebo--five minutes after they were asked to study and remember a series of images. In almost every other study, the caffeine was administered before the task.
24 hours later they were asked if they could recognize images from the previous day's session. Here's the twist: On the second day some of the images were slightly altered, making the task more than simple memory retention. It now involved the brain's ability to recognize the difference between two similar, but not identical items--"pattern separation"--a deeper level of memory retention. More members of the caffeine group were able to recall the images and discern the differences.
By giving the caffeine after the task, the team eliminated any effects on focus, attention and vigilance isolating caffeine's effect on just memory itself.
Now if we could just get one staffer here to remember to make new coffee.
"The discovery files" covers projects funded by the government's National Science Foundation. Federally sponsored research--brought to you, by you! Learn more at nsf.gov or on our podcast.