So umm.. the headphones you recommend respond to "18 Hz to 21 kHz" like it says on the page. But the brainwaves actually respond to: > 40 Hz = Gamma waves - Higher mental activity, including perception, problem solving, fear, and consciousness 13–40 Hz = Beta waves - Active, busy or anxio...

I tried anesthesiaQH as my first dose but i think it had the wrong effect. It was late at night (past 12) and i was really tired. i figured that anesthesia would just be relaxing. i didn't feel anything listening to it, but afterward i could fall asleep and was wide awake for over an hour after. is ...