From SB Hackerspace
[Update - expert advice leads us to believe that the proposed voltage of 9V is insufficient for the desired current. Increasing the voltage over 20V made the project team rethink the advisability of messing with our brains. We'll maybe investigate commercial options. Project suspended]
Trans-cranial Direct Current Stimulation (tDCS) is a small current of around 2 milliamps applied to the skin of the scull in specific regions to activate or suppress certain brain activity. Most recent interest has stemmed from reports of increased learning abilities and "flow states", which seems to suppress elements of self-doubt so learning is more focussed:
We are building a simple, cheap regulated current source for use in casual tDCS and are looking at something similar to these fine fellows are working on:
- http://www.longecity.org/forum/topic/50076-tdcs-thread/page__st__30__gopid__502747#entry502747 for more detailed DIY build info.