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Thought-controlled robotic hand can grip, twist, and feel

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Thought-controlled robotic hand can grip, twist, and feel Empty Thought-controlled robotic hand can grip, twist, and feel

Post by Ben Reilly Sat May 22, 2021 10:51 pm

Because Copeland’s brain hadn’t been injured in his accident, it could still—in theory—manage this dialog of inputs and outputs. But most of the electrical messages from the nerves in his body weren’t reaching the brain. When the Pittsburgh team recruited him to their study, they wanted to engineer a workaround. They believed that a paralyzed person’s brain could both stimulate a robotic arm and be stimulated by electrical signals from it, ultimately interpreting that stimulation as the feeling of being touched on their own hand. The challenge was making it all feel natural. The robotic wrist should twist when Copeland intended it to twist; the hand should close when he intended to grab; and when the robotic pinkie touched a hard object, Copeland should feel it in his own pinkie.

https://www.wired.com/story/this-brain-controlled-robotic-arm-can-twist-grasp-and-feel

The point of the article is that usually when we manipulate objects, we don't really on our eyes so much as on our sense of touch. Amazing that scientists have figured out how to give a robotic hand a sense of touch.

I've been thinking about this lately -- whatever we do probably incorporates more senses than we realise at the time. For example, I've realised that I can tell what chips/fries smell like when they're about half cooked, and how much I rely on sight when judging whether something's cooked properly. Gordon Ramsay (and I'm sure many other chefs) can tell how thoroughly cooked a cut of meat is by pressing it.
Ben Reilly
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Thought-controlled robotic hand can grip, twist, and feel Empty Re: Thought-controlled robotic hand can grip, twist, and feel

Post by eddie Sun May 23, 2021 12:38 am

Yep. We learned through Gordon Ramsey (sexy beast) that touching steak works like this:

Pressing your cheek - rare steak
Pressing your chin - medium to well done steak
Pressing your forehead - well done steak

Good tip.
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