____ Scientists increasingly find evidence that brain function can be enhanced by generating small currents in the brain. This can be done without having to drill through the skull, with transcranial direct current stimulation, tDCS in short. This promise – an easy way to make yourself smarter – stimulates an active D.I.Y. community to experiment for themselves. Positive results are being reported, but are these a real effect of tDCS ? Or imagination? Journalist and physicist Alejandro Tauber researched the phenomenon and tried out this D.I.Y. tDCS setup on himself. How about you ?