也许你见过人用义肢或机器手进行操作，可是你听说过人还可以用大脑来控制机器手的活动吗？欧洲科学家的一项实验表明，人可以通过电极用大脑神经控制没有与身体连接的机器手。虽然这个实验只持续了一个月，却给丧失手臂的人带来了希望。

    Pierpaolo Petruzziello, a 26-year-old Italian who lost his left forearm in a car crash three years ago, was successfully linked for one month to a robotic hand that allowed him to feel sensations in the artificial limb and control it with his thoughts.

    During a one-month experiment last year, Mr. Petruzziello reported that it felt like his lost arm had re-grown, although he was actually controlling a remote robotic hand connected through electrodes. The Italy-based medical team implanted electrodes into the nerves in what remained of Mr. Petruzziello’s left arm.

    During the month in which the electrodes were connected, he learned to wiggle the robotic fingers independently, make a fist, grab objects and perform other movements. By the end of the experiment, Mr. Petruzziello achieved a 95 percent success rate in manipulating the hand.

    The European scientists who led the project said this was the first time a patient has been able to perform such complex movements using the mind to control a biomechanical hand connected to the nervous system.

    It was also the longest time electrodes remained connected to a human nervous system in such an experiment, said Silvestro Micera, one of the team’s engineers. The next challenge is to create a system that can remain in the patient indefinitely.