Bionic arms. How do amputees with bionic arms control the fingers and wrists to do things like picking up a cup and drinking so smoothly?

Question

This was asked a few years ago on here, but things have apparently improved a lot since then.

The top answer from before was describing a process that was a little cumbersome, but there’s videos of folks with new arms moving them and using their new hands much more smoothly than I would have thought possible using the older method described.

In: 100

Answer 1

The people are still using the same physical process from years ago, using the nerve signals in their muscles to control the motors, but computer technology has advanced enough that the electronics controlling the prosthetic is much more powerful and smaller so there can be far more finesse in the control and movement