BrainGate and Electrical Implant Stimulate Muscle Movement
From: Medical Design Briefs - 05/2017

New research from Brown University (Providence, RI) describes how the
BrainGate brain-computer interface, combined with a functional electronic
stimulation system implanted in the arm of a Cleveland man with quadriplegia,
allowed him to move his arm and interface and hand again to eat mashed
potatoes, drink water from a mug, and scratch his nose.

BrainGate works by detecting neural signals acquired from electrodes
implanted in the surface of the motor cortex of the brain. Those signals are
translated by the collaboration’s algorithms into movement commands for
assistive devices. In the new research, the movement commands were relayed to
a functional electronic stimulation system that electrically stimulated Bill
Kochevar's muscles, allowing him to bypass his injury and once again deliver
his brain’s motion plan to his arm.

Read the entire article at:
http://npi-med.com/wp-content/uploads/2017/05/MAY2017-ISSUE-Medical-Design-Briefs.pdf
(page 33)

Links:
BrainGate 2 implants allow paralyzed Cleveland veteran to move limb (with
  video 3:04)
http://www.cleveland.com/metro/index.ssf/2017/03/braingate2_implants_allow_paralyzed_cleveland_veteran.html

Man with quadriplegia employs injury bridging technologies to move again—just
  by thinking
http://thedaily.case.edu/man-quadriplegia-employs-injury-bridging-technologies-move-just-thinking/

BrainGate
http://www.braingate.org