the one I'm having almost consistently since my first OBE is the vibrating ringing that you can hear in this piece :
https://www.youtube.com/watch?v=PNo0aOZiM5Q
I made sure it is NOT matching the heartbeat, it's not the same rhythm
https://www.youtube.com/watch?v=PNo0aOZiM5Q
I made sure it is NOT matching the heartbeat, it's not the same rhythm