Unfortunately, a bunch of reading up on the topic of tACS indicates that there aren’t any really tACS devices available which are both safe & cheap. (Which is too bad, because with an effect size like that it should both be easy to verify the effect and very useful if it pans out.)
Speaking of lucid dreaming, the other day I ran into some very interesting research about tACS (the dual of tDCS) being used during REM sleep to induce lucid dreaming in naive subjects with something like a 50% success rate: “Induction of self awareness in dreams through frontal low current stimulation of gamma activity”, Voss et al 2014.
Unfortunately, a bunch of reading up on the topic of tACS indicates that there aren’t any really tACS devices available which are both safe & cheap. (Which is too bad, because with an effect size like that it should both be easy to verify the effect and very useful if it pans out.)