The first person to live with a mind-controlled robotic arm is teaching himself piano. Johnny Matheny has spent the last five months with an advanced prosthetic, designed to replace the human hand and arm.

The robot arm is part of a research project run through the Johns Hopkins University Applied Physics Lab, and funded, in part, by the US Department of Defense. Data that researchers collect could revolutionize future mind-controlled robotics.

This is the second video in a series following Johnny has he spends the year with the arm.

Watch the arm being delivered:    • Living with a mind-controlled robot arm  

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