posted on Jun, 11 2009 @ 12:10 AM
Sensory deprivation is a very easy way to induce a trancelike or hypnotic state without chemical enhancement. There are all kinds of uses for it
including certain "alternative" practices. I tried it once for insomnia and it made it much worse, go figure. It is very good to bring your blood
pressure down if that is affected by stress.
I can see how it is used for interrogation though, not having the normal visual or auditory indexes about your environment induces panic.