Timely reality check.
HOW would you like to rearrange the famous sarsens of Stonehenge just by thinking about it? Or improve your virtual golf by focusing your attention on the ball for a few moments before taking your next putt on the green-on-the-screen? Those are the promises of, respectively, Emotiv Systems and NeuroSky, two young companies based in California, that plan to transport the measurement of brain waves from the medical sphere into the realm of computer games. If all goes well, their first products should be on the market next year. People will then be able to tell a computer what they want it to do just by thinking about it. Tedious fiddling about with mice and joysticks will become irritants of the past.
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