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News Link • Biology, Botany and Zoology

Tuning brain regions like radios for better memory

• newatlas.com by Michael Franco

From deep-brain stimulation that controls the symptoms of depression to zapping our grey matter to improve our vision, electrical current applied to our brains holds a lot of promise. Now researchers at Imperial College London have shown that a low-voltage stream of electricity can be used to bring different brain regions in sync with each other, leading to improved memory ability and the hope of treating neurological disorders.

In the study, the researchers used what's known as transcranial alternating current stimulation (tACS) to affect the way in which the electric current in two brain regions was oscillating. The weak electric current applied to the forehead from tACS brought the middle frontal gyrus and the inferior parietal lobule into sync with each other. Both of these areas are known to be involved in working memory, which is our extreme short-term memory that helps us function in the here-and-now. An example of working memory would be the way in which we'd be able to recall what we needed when we go out to our cars to retrieve a forgotten item.

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