For how long you have this kind of experience?
Is it always the same sound or noise?
Do you usually get the feeling of vibration throughout your body along with a loud buzzing in your head?

I experienced it about 4 years ago for the first time, it doesn't happen all the time and it's the same sound. I never feel anything, it's all just sound. It's kinda like once I lay down I can literally hear the energy release from my body. It's weird.

Do you, usually, hear the vibrations when you are between wakefulness and sleep?
Have you also, experienced as you are perceiving the physical world from a location outside of your physical body?

Hey, i think i have had similar issues. Just a quick question that might solve everything... do you take any medicine when these noises usually occour?

Have you noticed some connection between this issue and usage of certain meds?

first of all, yes i used to kind of... experiment with different medications (i would suggest not doing that) and i came across quite a few that caused slight audio hallusinations when i was trying to sleep. I'd wake up thinking i heard someone yell "Hey!" and look around the room only to find no one there. The main cause i think was if the pills were past the expiration date. and also it was mainly medicine that could make it difficult to sleep such as Concerta (used for ADHD)

and second of all. i think i shall send you a PM =)

This has been happening to me for about one and 1/2 months. I have had an MRI which showed nothing, have been to an ENY Doc (again nothing). My Doc is trying to think of the next step. This is driving me nuts as I have no other symptoms. If anyone can think of something please let me know and if my Doc comes up with anything I will do the same. So far he has just prescribed sleeping pills that at least allow me to go back to sleep after I am startled awake otherwise I would be going into sleep deprivation mode.