Thanks! Yes, the main power breaker was turned off at the panel to try an eliminate the problem. Unfortunately my house is a victim of stray voltage coming from a source other than my own. Just imagine if someone thought they were doing something good by attaching themselves to the ground...

"Do you also turn off the electric circuit running under the floor of your bedroom (the room below)? I do this, but I've also had to put a barrier under the bed/canopy of Aaronia Shield fabric to block the fields coming from the floor below. Layers of over-lapped heavy duty aluminum foil will work just as well if they extend outward on all sides of the bed so that the canopy can make contact with the foil. Some people run an alligator clip wire from the foil and plug into the ground of an electric outlet, I haven't found it necessary to do that."