When I first saw the presentations going around regarding the recording and decoding (and reconstruction of vocal cord/oral muscle movements) the one thing I wa

When I first saw the presentations going around regarding the recording and decoding (and reconstruction of vocal cord/oral muscle movements) the one thing I wasn't sure of was - how much of the signal was vibration artifact? Neural electrodes (at least single unit ones) tend to pick up a lot of vibration artifact which we see when people talk, cough, etc w/ those in. I guess if they are encoding and decoding voice from these...does it prove direct neural encoding/decoding from LFP/single units, if they can generate robot voice from someone who can't generate sound and thus vibrations on their own?