Preface.- A History of the Study of Echolocation.- Phylogeny, Genes, and Hearing - Implications for the Evolution of Echolocation in Bats.- Ultrasound Production, Emission, and Reception.- To Scream or to Listen? Prey Detection and Discrimination in Animal-Eating Bats.- Roles of Acoustic Social Communication in the Lives of Bats.- Guild Structure and Niche Differentiation in Echolocating Bats.- Neural Coding of Signal Duration and Complex Acoustic Objects.- The Neural Processing of Frequency Modulations in the Auditory System of Bats.- Behavioral and Physiological Bases for Doppler Shift Compensation by Echolocating Bats.- Perceiving the World Through Echolocation and Vision.- Perspectives and Challenges for Future Research in Bat Hearing.- Index.