Another significant player popped up today. Juri Kropotov (bio) Institute of the Human Brain of the Russian Academy of Sciences. You can download his 2006 Powerpoint presentation, “Transcranial Direct Current Stimulation (tDCS): a new old tool in neurotherapy” Here. You can see the Google Quick View version (and print it) here. Of special interest may be Kropotov’s use of tDCS in treating ADHD.