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Here are some quotes from a presentation by Yoky Matsuoka on neurobotics (thanks to joseter).
...we are so good with our hands, a lot of people say that our hands are the reason why we have this society. We can use tools, we can build buildings, we can even have this level of consciousness, some people believe, because we can gather amazing sensory information from our hands, and manipulate objects in a way that other primates don't do.
We want to build a mechanical device that's controlled by the original brain signals that would mimic our own limb, and nobody else could tell that its actually a robotic device.
This image is from Matsuoka's presentation. It's a monkey with electrodes in it's head. The brain area is interestingly masked off by a black blob. Dunno if that's to keep the audience from getting sad for the monkey, or if the tech is proprietary and they want to keep it secret, or what. Anyhow, the money's arms are tied down and he's controlling that robotic arm by thinking. But the grasping part of the action is being controlled by a human off to the side with a remote controller, because, as Matusoka says, "that level of detail we can't get yet." They currently working on some superdextrous robotic hands, trying to match up the machinery with the neurology.
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