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Non-invasive electrical brain stimulation has already seen plenty of promising use in potentially treating neurological conditions such as depression, OCD, chronic pain, etc. Now, a recent study released by researcher Rob Reinhart at Boston University seems to suggest non-invasive electrical brain stimulation could also revert working memory functionality of older adults back 50 years!
It is widely believed that cognitive/working memory decline is facilitated by the persistent but eventual disconnect between local and long-range neural circuits in the brain, which can be visualized by deterioration overtime in theta-gamma phase amplitude coupling functionality in the temporal cortex, and deterioration overtime of theta phase synchronization across the frontotemporal cortex.
In the study, adults in the age range of 60-76 years were treated with noninvasive stimulation meant to modulate the aforementioned long-range theta interactions; during the 25 minutes of stimulation, the frequency of stimulation was tuned and personalized to the individual’s brain network dynamics. As a result, working memory was drastically improved for the next 50 minutes post-stimulation in these older adults to the point where there was virtually no performance gap between the older adults and a younger group of subjects in a working memory test. It was found that this type of stimulation was even able to boost the working memory performance of younger adults that also had trouble with working memory.
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This monumental publication may just be showing us a glimpse into whats to come for non-invasive neuromodulation. Perhaps one day, these forms of stimulation will be commonplace as a means of not only treating neurocognitive deterioration, but also as a form of cognitive enhancement in everyday individuals.
For more information, see the link to the publication below: