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From Popular Science - New Technology, Science News, The Future Now:
Very few of us know exactly what it feels like to return to Earth's gravity after a long stay in microgravity, but a new system developed by the National Space Biomedical Research Institute can safely induce the mobility and sensory problems that accompany a return from space, unpleasant though they may be. The Galvanic Vestibular Stimulator (GVS) delivers electrical pulses to the nervous system, triggering the vision problems, confusion, and balance issues that often set in right about the time a Space Shuttle pilot is attempting to land his aircraft.
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