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Submission + - Brain Zapping Improves Math Ability (sciencemag.org) 1

sciencehabit writes: If you are one of the 20% of healthy adults who struggle with basic arithmetic, simple tasks like splitting the dinner bill can be excruciating. Now, a new study suggests that a gentle, painless electrical current applied to the brain can boost math performance for up to 6 months. Researchers don't fully understand how it works, however, and there could be side effects.
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Brain Zapping Improves Math Ability

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One way to make your old car run better is to look up the price of a new model.

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