Barb M, I am glad we are ALL thinking about good stuff here, I hope Garth appreciates your dedication to him, it sounds electrifying...shocking......ALTHOUGH I have neve seen an A battery, just AA, or AAA, this should trigger an investgation, WHO is hoarding the A batteries??? I also pictured you with the "radio in your ear" and thought of Allan Sherman's line about a "transistor radio with an earphone on one end of a wire that you can stick in your ear, and the other end that you can't stick anywhere because it's BENT" As far as your teeth...that's between you and yer dentist (LOL) Back to seriousness, the fans interupting the light from above, obviously had the effect you describe, but MAYBE, somethin' you ATE, or DRANK had an effect too? Did you overdo the coffee, Coke, or have a bunch of MSG in your food? Was my brother-in-law there discussing his brand of politics? (he makes MY blood boil, my liver quiver, and my brain explode, and I'm sure he could do the same for you, if you let him! ) If you still have a ceiling fan in your house, you can enclose it with a dropped ceiling and place open grids around the fan, but closed plastic panels below the blades, so you don't see the motion. OR use table or floor fans that run much faster so you don't see any pulsations! I read somewhere that a SINGLE flourescent lamp can cause mental problems, but two or more alternate with each other and give a smoother output which does not affect the brain. To me, the worst torture, is to have a light that keeps flashing on and off, and also hums loudly, because no one want to replace a bad flourescent tube! We had a local lumber yard burn to the ground due to a bad light fixture !n the store! TTYL, Ken B