Writing emails is all well and good, but now brain-computer interfaces have made the big leagues: a BCI has been used to Tweet. Earlier this month Adam Wilson, a graduate student in biomedical engineering at the University of Wisconsin-Madison, sent â??using EEG to send tweet.â? He used what has become the standard methodology, in which EEGs pick up electrical signals from the brain and translate them into movements of a cursor, in this case on a screen with the 26 letters of the alphabet, as the scientists show in this video.
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