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Right on, The brain stimulation is interesting. On kind of an opposite note I have played around with a bunch of EEG type hardware and the feedback it provides does make it easier to get into different brain wave states I think.

I have that on my list for my next experiments! What systems have you used? I was thinking about going with the NeuroSky, it seems to be the best value.

I have the headset from Emotiv, I bought mine probably 5 years ago though and they have rolled out many new versions since then. It came with a user friendly interface and a great community, no complaints! NeuroSky has been around for a long while to, they should be reputable as well