The impact on different parts of the brain with electricity is a very promising area of biomedical research. New discoveries in this area are made almost every month. The latest was the results of research by Rob Reinhart, a neuroscientist at Boston University, who was able to compensate for senile weakening of "working memory" simple electrical brain stimulation.
Conventionally, all types of effects of electricity on the brain are divided into two categories. A deep impact, in which electrodes are inserted into tissues and direct discharges to isolated areas of the brain. And weak stimulation, when impulses are passed through the skin, affecting large areas of the brain. Reinhart chose the second method because it is much easier to implement and less traumatic for elderly patients.
The neuroscientist selected a group of volunteers between the ages of 20 and 60, who were assigned to look through pictures from the "find the 10 differences" series and provide answers to questions. It is logical that the "young minds" coped with the task better, but after light electrical stimulation, the elderly subjects began to show the same results. And the provoked effect was observed at least 50 minutes after the procedure. Moreover, even among the "slow-witted" young people, after stimulation, the results improved markedly.
One of the reasons for such a reaction may be the restoration of synchronization of slow "theta rhythms" in the brain, which begins to degrade with age. Another version is that stimulation with electricity destroys so far unknown barriers, and different parts of the brain are again able to work as a whole. In any case, this is just the beginning of new research - every time scientists use electric current, the human brain presents them with new food for thought.