This volume provides contemporary discussions on new developments in aging research. It serves as an important update on the current state of research on the aging auditory system. Listening to All Voices: Interdisciplinary Approaches to Understanding Hearing in Aging Karen S. Helfer and Edward L. Bartlett Genetic and Molecular Aspects of the Aging Auditory System Shinichi Someya and Mi-Jung Kim The Aging Cochlea and Auditory Nerve Kevin K. Ohlemiller and Christopher Spankovich Age-Related Changes in the Auditory Brainstem and Inferior Colliculus Josef Syka Age-Related Changes in the Primate Auditory Cortex Gregg Recanzone The Aging Auditory System: Electrophysiology Kelly C. Harris Age-Related Changes in Segregation of Sound Sources Frederick J. Gallun and Virginia Best Causes and Consequences of Age-Related Hearing Loss Jennifer A. Deal, Nicholas S. Reed, Emily C. Pedersen, and Frank R. Lin Age-Related Changes in Speech Understanding: Peripheral versus Cognitive Influences Sandra Gordon-Salant, Maureen J. Shader, and Arthur Wingfield Aging, Hearing Loss, and Listening Effort: Imaging Studies of the Aging Listener Stefanie E. Kuchinsky and Kenneth I. Vaden, Jr. Functional Consequences of Impaired Hearing in Older Adults and Implications for Intervention Larry E. Humes, M. Kathleen Pichora-Fuller, and Louise Hickson Emerging Clinical Translational Treatment Strategies for Age-Related Hearing Loss Robert D. Frisina, Carlos J. Cruz, Tanika T. Williamson, Xiaoxia Zhu, and Bo Ding .