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Americas, Special Report, World News
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What we're talking about here is electrotactile stimulation for sensory augmentation or substitution, an area of study that involves using encoded electric current to represent sensory information -- information that a person cannot receive through the traditional channel -- and applying that current to the skin, which sends the information to the brain. The brain then learns to interpret that sensory information as if it were being sent through the traditional channel for such data. In the 1960s and '70s, this process was the subject of ground-breaking research in sensory substitution at the Smith-Kettlewell Institute led by Paul Bach-y-Rita, MD, Professor of Orthopedics and Rehabilitation and Biomedical Engineering at the University of Wisconsin, Madison. Now it's the basis for Wicab's BrainPort technology (Dr. Bach-y-Rita is also Chief Scientist and Chairman of the Board of Wicab). Eyeglasses are a typical example of sensory augmentation. Braille is a typical example of sensory substitution -- in this case, you're using one sense, touch, to take in information normally intended for another sense, vision.|­LimeWire provides a gateway for users to share software and music. It all began with Napster. As the music industry watched, millions of strangers logged on to the famous file-sharing site to swap MP3s for free. In 2003, the original Napster was shut down by a copyright infringement lawsuit, but it was too late to put the genie back in the bottle. The world had tasted the power of peer-to-peer (p2p) file-sharing, and it wanted more. Next came Gnutella, a new kind of p2p network. Gnutella differs from Napster because it doesn't have central servers that store information about which files are being shared. Gnutella isn't a Web site or a software download. It's a network protocol -- a standardized system of queries. Responses that allows individual computers to talk directly to each other. LimeWire is hugely popular. But the same controversy that surrounded Napster -- the illegal downloading of copyright material -- now plagues LimeWire, even though LimeWire cautions its users against sharing songs and videos that are under copyright protection.




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