I thought good progress was already being made with this, with devices like cochlear implants, retinal implants, and cyborg monkey arms: https://www.youtube.com/watch?v=wxIgdOlT2cY
BCIs are getting more and more attention. Imagine being able to hook up a processor, external storage, or even directly connecting to the internet using a BCI. Even connecting two brain is possible (and has been done). Some people say that one day we'll all be one connected organism, when we die just throw the brains in a big tank and let them live forever, like Futurama.
