Dr. Ryuta Kawashima is a professor of neuroscience and head of the Functional Brain Imaging Centre at Tohoku University. His successful research, especially with sufferers of Alzheimer's, is revolutionising health care around the world. His first book Train Your Brain has sold 1,200,000 copies in Japan alone and he is the hero of Nintendo's hugely successful game Dr Kawashima's Brain Training. His latest book is More Train Your Brain (2008).