Results of research that the working memory of the elderly recovered to 20's level when the brain was electrically stimulated
It seems like it is inevitable that forgetting gets worse as you get older, but by holding the electrodes on the head of the old person and applying electrical stimulation, it will hold information for a short time The research result that working memory (working memory) processed at the same time has recovered to the 20th generation is published on science journal Nature Neuroscience.
Working memory revived in older adults by synchronizing rhythmic brain circuits | Nature Neuroscience
Electrical jolts to brain restored memory of elderly to that of 20-year-old | Ars Technica
To Improve Memory, Tune It Like an Orchestra-The New York Times
The current research was conducted by Robert Reinhardt, Associate Professor at Boston University and John Nguyen, who are two of the approaches to the “working memory deficit problem” that is the main cause of cognitive decline in the elderly. An experiment was conducted to measure what kind of effect the working memory has on applying electrical stimulation. Electrical stimulation is customized to each subject to streamline the action between the prefrontal cortex and the temporal cortex. Electrical stimulation is of the type that flows from the electrode attached to the head and does not require surgery such as implant. In the experiment, the next image is shown immediately after showing the image to 42 old people aged 60 to 76 and 42 young people in their 20's of the control group, 'The second image is the first image. I received a memory test that measures the ability of the working memory to answer “Is it the same or different?”
When we tested before giving electrical stimulation, elderly people were correct rate of 80%, but 20s young people were correct rate of 90%. After that, the elderly were given electrical stimulation for 25 minutes, and the young people in their twenties were given “false electrical stimulation” for 25 minutes, considering the placebo effect . In the tests performed after the electrical stimulation, the correctness rate of both the elderly and the twenties marked 90%, and the electrical stimulation improves the result of the memory test, but the false electrical stimulation results It was confirmed that it did not change. In addition, the memory improvement effect lasted for about 1 hour after applying the electrical stimulation.
Reinhardt and Nguyen also experimented with “deteriorating the working memory capacity” using the principles used in this study. The results of the memory test actually got worse when the head of the adolescent's subject was given an electrical stimulus to 'desynchronize their brain waves'. 'The experiment is being conducted in a carefully controlled manner, and it is still easy to try to improve the working memory by electrical stimulation,' said New York Times, neuroscientist at the University of California at San Diego. 'It is not a thing,' commented.
in Science, Posted by darkhorse_log