Brain stimulation in sport: is it fair?

If I tried to sell you a drink or a tablet, claiming it would make you run faster or improve your tennis serve, you would be suspicious. Taking a supplement to boost performance in sport feels like cheating, and it generally is. However, new advances in neuroscience have pointed the way to performance enhancement by stimulating the activity of the brain. Mild electrical stimulation using electrodes placed on the head – called transcranial direct current stimulation, or tDCS, makes the brain more or less active, and may lead to long-lasting changes in brain processing. Changing its processing has immense value in studying the brain, and particularly in treating brain disorders. tDCS may prove to be an effective treatment in conditions where a brain area is too active or not active…


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