A woman with Parkinson's disease has played her clarinet while undergoing brain stimulation, enabling surgeons to see - and hear - immediate results.Denise Bacon, 65, from Crowborough in East Sussex, experienced instant improvement in her finger movements as the electrical current was delivered to her brain.

A woman with Parkinson's disease has played her clarinet while undergoing brain stimulation, enabling surgeons to see - and hear - immediate results.Denise Bacon, 65, from Crowborough in East Sussex, experienced instant improvement in her finger movements as the electrical current was delivered to her brain.