Dr. Edward Chang is a neurosurgeon at UC San Francisco specializing in the treatment of intractable epilepsy, trigeminal neuralgia, and brain tumors. His scientific research focuses upon the brain mechanisms for human speech, movement, and cognition. Chang co-directs the Center for Neural Engineering & Prostheses at UC Berkeley and UC San Francisco, which brings together engineering, neuroscience, neurology and neurosurgery to develop state-of-the-art biomedical devices to restore function for patients with neurological disabilities.