In the future, if you want to improve your ability to manipulate numbers in your head, you might just plug yourself in. So say researchers who reported in the Cell Press journal Current Biology on studies of a harmless form of brain stimulation applied to an area known to be important for math ability. "With just five days of cognitive training and noninvasive, painless brain stimulation, we were able to bring about long-lasting improvements in cognitive and brain functions," says Roi Cohen Kadosh of the University of Oxford...
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