Although the functions of sleep remain largely unknown, one of the most exciting
hypotheses is that sleep contributes importantly to processes of memory and brain plasticity.
Over the past decade, a large body of work, spanning most of the neurosciences, has ...

Sleep is a fundamental and evolutionarily conserved aspect of animal life. Recent studies
have shed light on the role of sleep in synaptic plasticity. Demonstrations of memory replay
and synapse homeostasis suggest that one essential role of sleep is in the consolidation ...

Abstract Ghrelin acts as a neuropeptide. It participates in sleep–wake regulation. After
systemic ghrelin treatment nonREM sleep is promoted in male humans and mice. This effect
is influenced by gender, time of administration and depression. Ghrelin does not modulate ...

Abstract All animals in which sleep has been studied express signs of sleep-like behaviour,
suggesting that sleep must have some fundamental functions that are sustained by natural
selection. Those functions, however, are still not clear. Here, we examine the ecological ...

Abstract Human sleep is a global state whose functions remain unclear. During much of
sleep, cortical neurons undergo slow oscillations in membrane potential, which appear in
electroencephalograms as slow wave activity (SWA) of< 4 Hz 1. The amount of SWA is ...

Sleep spindles are distinctive electroencephalographic (EEG) oscillations emerging during
non-rapid-eye-movement sleep (NREMS) that have been implicated in multiple brain
functions, including sleep quality, sensory gating, learning, and memory. Despite ...

Abstract Sleep has been identified as a state that optimizes the consolidation of newly
acquired information in memory, depending on the specific conditions of learning and the
timing of sleep. Consolidation during sleep promotes both quantitative and qualitative ...

Abstract The concept of'sleeping on a problem'is familiar to most of us. But with myriad
stages of sleep, forms of memory and processes of memory encoding and consolidation,
sorting out how sleep contributes to memory has been anything but straightforward. ...

At a time when several studies have highlighted the relationship between sleep, learning
and memory processes, an in-depth analysis of the effects of sleep deprivation on student
learning ability and academic performance would appear to be essential. Most studies ...