You are thinking of Ted Berger's work at USC, among MANY other researchers' efforts. Here is a link to the class: https://classes.usc.edu/term-20161/course/bme-

You are thinking of Ted Berger's work at USC, among MANY other researchers' efforts. Here is a link to the class: https://classes.usc.edu/term-20161/course/bme-552/ https://classes.usc.edu/term-20161/course/bme-552/ Also, the main issue with their work is glia' scarring inside the central nervous system; the body ensures the implants are time limited.