The researchers fed rats different doses of Ritalin and then studied their neural activity, which was measured by electrodes implanted in their brains. They found that brain signals voyaging between the hippocampus (responsible for memory, among other things) and the prefrontal cortex (also responsible for memory) became more precise. Ritalin also made neurons play well with others – more neurons fired together, and less wandered off by themselves. When scientists upped the doses, however, the rats lost their focus – proving that, at least in the case of Ritalin, less is more.
[via Scientific American]
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.