A monkey with a brain implant the size of a fingernail can move a cursor on a computer screen just by thinking. One day scientists may be able to implant similar chips in human brains so that we can control complex devices with our minds.

Humans have actually already been implanted with a device that allows mind control of a cursor, but the new implant, devised by John Donoghue, chairman of neuroscience at Brown University, is smaller and fewer neurons.
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Jim Goldman reports in abcnews.com that Leslie and Jeffrey Jacobs and their 14-year-old son Derek will be the first people to be implanted with the new Verichip I.D. chip, which is the size of a grain of rice.

?We?re doing something that is good for mankind,? Jeffrey says. ?I feel like I?m going with the flow of nature, and doing exactly what we?re here to do to improve the problems of the world.?
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