Prepare to be remotely controlled. I was. Just imagine being rendered the rough equivalent of a radio-controlled toy car. Japan's top telephone company says it is developing the technology to perhaps make video games more realistic. But more sinister applications also come to mind. I can envision it being added to militaries' arsenals of so-called "non-lethal" weapons. A special headset was placed on my cranium by my hosts during a recent demonstration. It sent a very low voltage electric current from the back of my ears through my head -- either from left to right or right to left, depending on which way the joystick on a remote-control was moved. I found the experience unnerving and exhausting: I sought to step straight ahead but kept careening from side to side. Those alternating currents literally threw me off. The technology is called galvanic vestibular stimulation -- essentially, electricity messes with the delicate nerves inside the ear that help maintain balance. I felt a mysterious, irresistible urge to start walking to the right whenever the researcher turned the switch to the right. I was convinced -- mistakenly -- that this was the only way to maintain my balance.

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