Deep Brain Stimulation or DBS for Essential Tremor, Parkinson's disease and Dystonia. Sound like science fiction? It's not When Sister and Brother are told their Grandfather is having BRAIN SURGERY for Parkinson's disease, a Movement Disorder, they are at first shocked, then very frightened-and they have lots of questions. Although this book is written and illustrated for children, it is also an excellent primer for anyone wanting to learn the basics of Deep Brain Stimulation for Movement Disorders