I don't really think it would do anything to help me in the long term...however if given the opportunity I think it would be interesting to try since I've tried meditation and what not with not much luck...though my goal would be to try and reach some lucid state and play around with that not so much 'psychotherapy' and the minor hallucinations sounds intriguing...but I think too long in one of those things could drive me or anyone else insane to. Also my deep state of meditation or whatever could bring up some things that are difficult and/or horrifying to face so there is that to but it couldn't be too much worse than that bad mushroom trip I had.

Honestly the only time I've heard of sensory deprivation is in a negative light, such as being used to torment someone....interesting that sort of thing could have therapeutic value as well based on that.