Scientists are constantly learning new insights about the brain and how it works, and this book is a good overview of our current understanding of the neurobiological workings of the brain. Ratey sheds a little light on what is going on chemically in the brain as we experience daily life, and also discusses the neurological processes linked to disorders like autism, ADHD, and dyslexia. For me, one of the most interesting aspects was when he noted that Tourette's syndrome (which the popular mind tends to conceive as a neurological disorder) and Obsessive-Compulsive disorder (which tends to be classed as a psychological disorder) seem to be very closely related in terms of what's going on in the brain. It serves to show that one can't really draw a line between neurobiological and psychological disorders, and that there's really no such thing as a mental illness that's solely psychological. It may be all in your brain, but it's not all in the mind.