Sitting stone still under a skull cap fitted with a couple dozen electrodes, Austrian scientist Peter Brunner stares at a laptop computer. Without so much as moving a nostril hair, he suddenly begins to compose a message -- letter by letter -- on a giant screen overhead. B-O-N-J-O-U-R" he writes with the power of his mind, much to the amazement of the largely French audience of scientists and curious onlookers gathered. Brunner and two colleagues from the state-financed Wadsworth Center in Albany, New York were demonstrating a "brain computer interface (BCI)," an astounding technology which digitalizes brain signals emitted as electrical impulses -- picked up by the electrodes -- to convey intent. Possible applications extend beyond the written word into physical movement -- it is only a matter of time, Sellers says, before the same technology is used to operate motorized wheel chairs.
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