Paralysed man sends e-mail by thought

A pill-sized brain chip has allowed a quadriplegic man to check e-mail and play computer games using his thoughts. The device can tap into a hundred neurons at a time, and is the most sophisticated such implant tested in humans so far.

Many paralysed people control computers with their eyes or tongue. But muscle function limits these techniques, and they require a lot of training. For over a decade researchers have been trying to find a way to tap directly into thoughts.


<a target="_top" href="http://www.nature.com/news/2004/041011/full/041011-9.html">Paralysed man sends e-mail by thought
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