curious,
I know nothing about it other than what it says in the title. It indicates that it is a relaxation method. The best relaxation method i've ever found is Deep Relaxation paraliminal.
I don't approach Silva w/ the intention to relax. I use it for programing, i.e., for correcting problems & for healing & for developing behaviors. I also use New Behavior paraliminal tape. For instance i've started using New Behavior for extending my habit of having to go to the bathroom immediately after doing Qigong.
I also don't like to purchase the *other* stuff if the original is available.