The book is cleverly structured. Ratey draws you in by beginning each chapter with an account of a real person's perceptual difficulties, the problems these caused in their daily lives because of misdiagnosis and their eventual relief once the real cause was recognized - physical malfunction in the brain. The chapter then becomes more involved as we move away from the personal account to consider how the brain works with regard to the problems described. But the explanation is never overly technical and can easily be grasped by the non-specialist reader. A great deal of trouble has obviously been taken to carefully select the case studies and to present the material in plain English. The writing is concise. Technical terms are always explained when first used. People who are interested in the treatment of depression will find this book very useful. Although depression is not discussed as such, it may come as a revelation to some that we can actually train our brains to 'undepress' ourselves. Anti-depressant drugs, such as the SSRIs, certainly have a role to play but a reading of this book should convince anyone that drugs are by no means the whole answer.