Although dreaming has been described since ancient times, it remains a somewhat mysterious mental process and scientists around the world continue to study its mechanisms and meanings. In this unique work, experts from around the globe show the newest and most exciting research and findings related to the biology and psychology of dreaming. New studies of dream content, for example, show that across age groups, cultures and clinical groups, there are recurring themes that people dream about. New brain imaging techniques show us specific brain regions involved in dreaming. Other research featured here describes the biology or psychology of realistic and bizarre dreams, of symbolic images in dreams, and of how differences in gender and personality affect dreams and dreaming. The newest and most extensive source of information on dreaming that exists today, this set also gives readers insights to understand how this new science could lead to innovations in the medical, social technical and biotech fields. Dozens of contributors - including leading experts with an international reputation in their fields - also show us how brain functions affect and are affected by dreaming, and why these new findings should be important to all of us. Volume I, "Biological Aspects", spotlights the biology of sleep and dreaming. Volume II, "Content, Recall, and Personality Correlates", focuses on dream content and its many facets. In Volume III, "Cultural and Theoretical Perspectives", the many theoretical accounts of dreams are presented.