Evolution hasn't really caught on to the fact that calories are really easy to obtain now, so there's probably some low-hanging fruit available by subverting the brain's energy-conserving mechanisms. (I don't know whether TDCS is doing that.)
Evolution hasn't really caught on to the fact that calories are really easy to obtain now, so there's probably some low-hanging fruit available by subverting the brain's energy-conserving mechanisms.
Article here;
http://www.ox.ac.uk/media/science_blog/brainboosting.html
The article goes on to discuss the ethics of the technique.