Warren Grill is a professor of biomedical engineering@Duke University’s Pratt School of Engineering. His research interests are in neural engineering and neural prostheses, and include design and testing of electrodes and stimulation techniques, the electrical properties of tissues and cells, and computational neuroscience with applications in restoration of bladder function, treatment of movement disorders with deep brain stimulation and multi-joint limb movement. Address: Duke University Department of Biomedical Engineering, Hudson Hall, Room 136, Box 90281, Durham, NC 27708-0281. Email: warren.grill@duke.edu