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Brain sensor allows mind-control
A sensor implanted in a paralysed man's brain has enabled him to control objects through just the power thought.
The experimental set-up allowed the man, who has no limb movement at all, to open e-mail, play a computer game, and pinch a prosthetic hand's fingers.
The US team behind the sensor hopes its technology can one day be incorporated into the body to restore the movement of paralysed limbs themselves.
Miguel Nicolelis, a neurobiologist from Duke University, was critical of the research. ...He told the BBC's Science in Action programme that although some positive signs had been seen for one patient, the paper showed that the technology did not work in the second, older patient.
He said: "When you decide, like this company did, to go into clinical trials for an invasive technique the stakes are very high. ..."They should have demonstrated something that lasts for a long period of time, that it is reliable and safe, and that it can restore much more elaborate functions. I don't think that this paper shows that.
"I think it was too early to use this kind of technology in this kind of clinical trial."