by ParanoidLord » December 28th, 2011, 11:16 pm
I don't know for sure how well hypnosis works on sleeping subjects, but as far as I know, it reduces the effectiveness. It all depends on how active your brain's auditory functions (hearing, cognition, etc) are when you're asleep, but one should note that hypnosis is a state of heightened awareness, while sleep... not so much.