This book reviews current knowledge on the importance of sleep for brain function, from molecular mechanisms to behavioral output, with special emphasis on the question how sleep and sleep loss ultimately affect cognition and mood. It provides an extensive overview of the latest insights in the role of sleep in regulating gene expression, synaptic plasticity and neurogenesis and how that in turn is linked to learning and memory processes. In addition, readers will learn about the potential clinical implications of insufficient sleep and discover how chronically restricted or disrupted sleep...