Violinist Plays Instrument during DBS Surgery
From: Medical Design Technology - 08/25/2014

You may have heard the story of a professional musician who played the violin
while having brain surgery at Mayo Clinic. That journey started back in 2009.
A surgical team implanted electrodes into his brain to stop a tremor that
could have ended his career. Today, Roger continues to be one of the music's
foremost violinists, playing for audiences on the world's stage.

View a video (4:24) at:
http://www.mdtmag.com/videos/2014/08/violinist-plays-instrument-during-dbs-surgery

Link:
Deep brain stimulation
http://www.mayoclinic.org/tests-procedures/deep-brain-stimulation/basics/definition/prc-20019122/