Implants a suggestion that you need to forget the session, because the more you forget, the better you feel. Each time you try to remember, it slips from your mind.
RAW: usually just a plain recording, with no effects whatsoever, except for when binaurals are specified.
SFX: with sound effects, like echoes, panning, 3D, environmental effects, and all sorts of fun stuff.
Some files have many versions you can chooses from, while others are more sparse.