Watch: Person uses thoughts to operate a wheelchair
This post is presented in "gee whiz isn't that amazing?" style, but in fact people have been developing this sort of capability over time (and I've covered it here from time to time). This short article and video demonstrates (as the title suggests) people moving a wheelchair using thought alone. "In this case, three people with tetraplegia, the inability to move their arms and legs due to spinal injuries, operated the wheelchair in a cluttered, natural environment to varying degrees of success." No, it's not ready for the highway yet. But we can imagine a future in which this is possible. Here's the original press release from U of Texas and the formal publication.
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