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Hyperventilation may be the new power button. Scientists developing brain computer interfaces (BCIs) for disabled people have had great success with EEG interfaces that allow brain signals to guide the cursor. But they couldn't solve the boot-up problem — the EEG interface just wasn't able to translate "turn on" thoughts into a command. Now researchers in Austria think they've got it solved with EKG heart monitors that can convert human heartbeats into a "power up" signal. More »
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