According to the BBC a musician undergoing brain surgery to treat a hand tremor played his banjo throughout to test the success of the procedure. Bluegrass player Eddie Adcock realised his tremor could threaten his ability to perform professionally.
Surgeons at the Vanderbilt Medical Center in Nashville placed electrodes in Mr Adcock's brain and fitted a pace maker in his chest which delivers a small current which shuts down the region of his brain causing the tremors.
Pretty logical when you think about it but there is something a little strange about plucking a banjo when surgeons are fiddling with your brain....