Dædalus was founded in 1955 as the Journal of the American Academy of Arts and Sciences. It draws on the enormous intellectual capacity of the American Academy, whose members are among the nation's most prominent thinkers in the arts, sciences, and humanities. The theme for the Winter 2015 issue is "What is the Brain Good For?" The Study of the Nervous System & Its FunctionFred H. GageBrain Mechanisms for Active VisionRobert H. WurtzPerceivingThomas D. AlbrightThe Energetic EarA. J. HudspethRememberingLarry R. Squire & John T. WixtedSleep, Memory & Brain RhythmsBrendon O. Watson & György BuzsákiA Hard Scientific Understanding Voluntary MovementsEmilio Bizzi & Robert What Are They & How Does the Brain Make Them?Joseph E. LeDoux Working Memory Limits on the Bandwidth of CognitionEarl K. Miller & Timothy J. Buschman ConsciousnessTerrence J. Sejnowski