Reductionist science, thus fatally flawed speculative tech.
Every person's brain, nerves, senses, and muscle structure are probably unique, probably even for genetically identical clones too, so it'll probably always be a significant customised challenge to encode/decode neural signals. The bodies communications are probably rather more complex than realised, using electrical, radio, and chemical signalling.
Remote control, not using muscle nerves, will probably be a lot harder than they suggest; even prosthetic limbs using muscle nerve signals probably require plenty of user training to learn to use, because of the above uniqueness. Complex senses like sight and hearing are probably going to be damned hard to do if attempts are made to bypass the learned, complex structure and circuitry of the eyes and ears.
Backing up memories is not happening with so little and only electrical sensing, you'd need something like a 3D "Culture" "Lace", grown into the brain, to do that, and probably outside the skull too e.g. some of what enables us to think maybe outside the skull too, like neurons in the spine and gut, and several semiconducting radio nodes (meridians) spread across the body.
Some people have suggested that the brain is a mass of continuously competing non-linear entities, with the consciousness providing the illusion of unity; hardware simulation of neurons will probably never create a true AI, including so-called Quantum computers, which probably won't scale.
Biting the hand that feeds IT
