It is the hope that this compilation of most data available on sensation will be of interest for the reader, will incite to perform more research so that an important part of pelvic functional diagnosis and treatment modalities will use the whole of the mechanisms available. Thebook is intended for all interested in pelvic functions and the interactions between the different structures, specialists in urology, gastroenterology, sexuality, pain, pelvic floor function and dysfunction, paediatricians and geriatricians, neurologists, students and those in training . The reader will find interesting and challenging information, and suggestions for further research.