ok, so for me it happens like this..I start to see a circular patturn, sort of crosshatched..it vibrated and then my whole visual field vibrated, than I feel it all througout me. I usually than see this crystal sort of thing..but its sort of like I am inside of this crytal form looking out through one side of it..reminds me of the merkaba people talk about. Than I feel as if I am falling through it, through myself..into this space..the DMT room. Its always spinning around and around when I go there. If I have taken enough It starts to feel like once the vibrations settle, than I have the visions within the room, or feel myself start to travel. But the main thing about the "DMT room" is that it seems to always be spinning around. I have gone to the room while at a psytrance party, and the music filled up the room in form of so many colours and patturn overlapping eachother. Another time the room stopped spinning and I was left in some sort of alian space station place..another time I focussed on love and felt myself expand as love into the people around me for a few minutes..quite strange.