It's a pity I'm not in Prague anymore, but when I come back I'll surely come check it out :)

nice work with the thinking cap - are you still using it? can you comment anecdotally on effects? i'm hacking one together after seeing this post :)

I used it again yesterday after a long time. I do not use it too often because I have other methods to achieve the same effect using the mental techniques. I use it only if there is headache and it is too difficult to concentrate to mental techniques.

Effect very depends on start state mostly on levels of stress hormons in the body.Here some early tests http://brmlab.cz/project/brain_hacking/tdcs (part tests) I planed to do more test (i made aroud 50 , but the dont documted),currently working on other projects but plans to come back and improve it (mostly the electrode position and current density).

-------- If you want to use higher current use 2x9V baterry ,there must be enough volts to equalize the resistance changes. ( resitence electodes+head is about 2-5kOhm)