Experts in neuroscience and artificial intelligence provide accessible expository chapters that address many challenging questions concerning human and animal emotions, and their possible analogs in the "brains" of robots, both now and in the future. What do we know of emotions in the animal and human brain? What are their functions? Can we design robots that will do more than mimic emotions? What would be the advantages of such designs, and how would they help us better understand human emotions? This timely and stimulating book is intended for researchers and graduate students in neuroscience, cognitive science, psychology, robotics and artificial intelligence.