This particular device doesn’t even penetrate al the way through the scalp, so the skull would likely obliterate these long before they reach the brain. Motion

This particular device doesn’t even penetrate al the way through the scalp, so the skull would likely obliterate these long before they reach the brain. Motion is a problem for things that are inserted into the brain, but people have been getting DBS and sEEG implants for 30 years, and it’s manageable, though not totally solved.