In this classic book, Sacks documents a number of fascinating and strange cases that he came across in his work as a psychologist.The book is named after one of these cases: PSYCHOLOGY OF IMMIGRATION This is a condition where people are unable to interpret visual information so cannot recognise objects or faces. From this to a case about a patient who couldn't recognise his own leg, Sacks deals with the most extraordinary conditions.It is an engaging and easy to read book, which will make you appreciate that a lot can go wrong in our brains.