Okay, this going to sound wierd but..... When I approach structures that generate/produce/transmit a relatively large amount of electricity, I begin to hear a high pitched noise. It's like a kind of constant, "zzzzzz". Then I begin to feel pressure on my head. Normally when I sense this, I move away immediately because it begins to make me somewhat dizzy. Possibly, if I stayed close by long enough, I might faint or something . This also happens at one cash register. The cash registers at this place are placed close by, and at right angles of each other. There is a sum of 3 cash registers here. Yesterday we were there, and my mom called me over to help her with something. Immediately when I came within a few feet of it, I felt and heard that constant, high pitched sound (that is really silent). It caused some pressure around the circumference of my head. When I stepped a few feet back, it stopped. Wierd huh? Can anyone explain this at all? I think I should go to the doctor and be examined or something.