Book excerpt: Meet the inhabitants of the brain in this reader-friendly introduction to what it is and how it works. Residents include Frederick Foresight (the frontal cortex), Mayor of Cephalton-upon-Ridge, who is the `big picture' person responsible for planning and decision-making; Sage Seahorse (the hippocampus), who has an astonishing memory for times, names and places; Annie Almond (the amygdala), the community's alarm system who is always on the alert; and many other fellow citizens. Each character is introduced and their appearance, role and key functions in the brain explained. The authors also show what happens when things go wrong in the brain, and illustrate the work using examples of classic clinical cases. This book provides an immediate and entertaining way for anyone to gain a basic understanding or to refresh their knowledge of the inside workings of the brain.