Preliminary results were here. Essentially, it was a tiny, poorly equipped experiment, and our results showed that the current slightly impeded our ability / desire to to DNB. It seems plausible to me that we may have misread the papers we were working off of, because they just describe anodes and cathodes (and it's ambiguous whether that's the battery's anode or your head's anode).

My takeaway was that you can alter your mental experience with TCDS, but that doing it in a positive way is a nontrivial undertaking. I am slowly putting together better equipment to do more rigorous testing, and will describe my results once that happens.