The other day, I was sitting down watching TV, then I turned the TV off, and the DTV, and I noticed a sort of ringing high frequency humming in my brain. But the strange part was that when I turned my head 90 degrees, it stopped or got really quiet. Turned my had back to normal position sound was back. Did this for a while, and noticed that if I tuned my head 90 degrees in either direction, the humming would stop, it I turned my head 180 degrees, still humming. This really got me wondering. My conclusion was that my brain must be picking up on some sort of signal in the air, and that somehow my polarity had some sort of effect. Is this even possible, does this happen, is there a good explanation? It was really strange, I could do it fast and get a wah wah like sound going. This occured for about 10 min. until I said oh well and went to bed.