A low hum

Hey guys! Sorry I have not been as active in the DV community as of late, I was (and still kind of am) going through a bit of a dry spell so I am focusing on meditation and WILD technique. So this is not really a dream entry but some stuff I thought would be cool to get down about my experimentation with sleep paralysis. For the past couple of weeks I have been allowing my body to go numb and enter into sleep paralysis while keeping my mind awake. I have been doing this successfully by laying flat on my back on my bed and allowing my body just to get taken by the feeling of the paralysis. I have not been able to fall asleep in this state however. I mean its good for experimentation but sucks when I cannot go to sleep. I do not usually sleep lying on my back so my mind does not want to go to bed when I do this. At first I just would lie there and let my mind wonder and let my body just slip into SP. I would feel like I was in that roller coaster ride "The Gravatron." (where you are pinned to the wall and cannot move) I was pinned to my bed and it almost felt like my bed had flipped over and I was stuck to it as if it were the ceiling. I would be hanging over a bottomless pit. I would do this nightly. Eventually it would not take hardly any time at all for me to get into SP. Last night I had sort of a break through of sorts. I have been researching into occult practices, and I had read of a practice that if you meditate while laying down, and you place a crystal in each hand, and one on your chakra point on your forehead (your third eye) you would "charge" or enhance your psychic ability. I tried such a method last night. I even had a particular crystal that is supposed to help with dream vividness and recall. I placed this one on my third eye. The SP felt like normal at first, my limps going numb and everything. But I started to feel a weight press down right on my rib cage and my stomach. Then I felt a weight on my head, ( I could actually feel my head sink into my rather firm pillow). I did not think anything of it til something just kicked in. I am not sure what it was or what it means but I was just lying there thinking about random thoughts (I.e. what I have to do before work the next day..etc) Then all those thoughts went silent, in fact ALL of my thoughts were cut off and my mind was completely clear. And it was like my thoughts were cut off mid sentence. Right after my mind just cut off my thoughts I immediately began to hear a low "hum" or more like I could hear a vibration. A few seconds after this started a high pitched ring was layered over top of the vibration. I had no control over this and I could not really think of anything else, it was like all my brain wanted to do was listen to this hum. I opened my eyes and could see the air swirl in spirals above me. And that is when the ride started.my body began to feel like it was stuck to the bed again, only this time it felt like I was never going to move again and I felt like my entire bed was rotating and spinning while I was strapped down. The crystals felt very warm and almost hot in my hands. The crystals almost rolled out of my hands (or at least it felt like this while my bed was spinning) and I had to enclose my fingers around them to keep them in place. I think this went on for a good half hour to 45 min before I snapped back to this plane, put the crystals away, and went to bed.