Last year, we wrote about a technology called tDCS — transcranial direct current stimulation — that improves your mental acuity by passing a small electrical current through your brain. The US Army and DARPA are already using tDCS to speed up the training of drone pilots and snipers, and one university study even showed tDCS to improve the performance of video game players.
tDCS applies a tiny current (a few volts @ 2mA) to your brain via two electrodes attached to your scalp. Depending on where the electrodes are placed, the current flows through a specific region of your brain, making the neurons more sensitive (i.e. faster-reacting) and increasing their plasticity (better at learning). It really is as simple as it sounds, and you can build your own tDCS equipment very easily. We obviously can’t vouch for its safety, but negative side effects seem to be surprisingly rare.
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