BrainGate2: Two tetraplegia patients from brainstem stroke successfully control robotic arms in three dimensions

BrainGate consortium/BrainGate2 robotic arm control

In a Nature-published milestone, two BrainGate2 participants paralyzed from brainstem stroke years earlier demonstrated real-time control of robotic arms for three-dimensional reaching and grasping. One participant used a DEKA robot to pick up a bottle of coffee, bring it to her mouth, tilt it, drink through a straw, and return it—all guided by thoughts alone. The work established the feasibility of using brain signals for functional manipulation tasks.

• First demonstration of 3D robotic arm control by tetraplegia patients using BrainGate system.
• One participant drank from a bottle independently—a practical proof of functional restoration.
• Tetraplegia was caused by brainstem stroke several years prior to the trial.
• Results published in Nature, establishing landmark precedent for brain-controlled assistive robotics.