What do we know about the true function of the auditory system? What questions still remain unanswered?Since the last century, researchers have been making amazing discoveries about the ear and how closely it is linked to our physical and mental health. Nowadays, thanks to modern technology, its true diagnostic and therapeutic potential is coming to light. The author has compiled over 600 scientific articles examining the role of the ear in evolution and in gestation and subsequent development. Drawing on these, he offers a new perspective on this sensory organ, analyzing its influence on, for example, learning disorders and mental illness. This book has been written for health professionals - especially audiologists, psychologists and music therapists.