The “problem” (opportunity!) was that these arrays are in the dorsal ‘hand knob’ area involved in arm and hand movements — not speech. But as far as we know, no one had actually looked for speech-related activity there. 4/
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Another open question is whether finding this activity in "arm" motor cortex is due to remapping because of the participants' tetraplegia. We don't think this is the case, but a definite answer is elusive because we'd need intracortical recording in able-bodied people. 15/15
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Do you think that syllables with similar dynamics but different articulators would be difficult to discriminate? I.e. are you picking up global motor dynamics only whereas implementation details would be more ventral?
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Are you thinking about asking the pt to learn ASL then speaking while imagining signing?
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| AP Giannini, Burroughs Wellcome CASI, Stanford Wu Tsai Postdoc Fellow