Brain activity during sleep is characterized by circuit-specific oscillations, including slow
waves, spindles and theta waves, which are nested in thalamocortical or hippocampal …

Dreams are experiences that occur during sleep, while we are disconnected from the
environment. Thanks to recent progress in neuroimaging techniques, it is now becoming …

Dreams take us to a different reality, a hallucinatory world that feels as real as any waking
experience. These often-bizarre episodes are emblematic of human sleep but have yet to be …

Consciousness can be defined by two components: arousal (wakefulness) and awareness
(subjective experience). However, neurophysiological consciousness metrics able to …

To understand what makes sleep vulnerable in disease, it is useful to look at how wake-
promoting mechanisms affect healthy sleep. Wake-promoting neuronal activity is inhibited …

Objective The lockdown due to COVID-19 pandemic had a strong impact on daily habits,
emotional experience, mental health and sleep. A large body of evidence suggests that …

The brain exhibits a complex temporal structure which translates into a hierarchy of distinct
neural timescales. An open question is how these intrinsic timescales are related to sensory …

Although the EEG slow wave of sleep is typically considered to be a hallmark of nonrapid
eye movement (NREM) sleep, recent work in mice has shown that slow waves can also …

Neural substrates of wakefulness, rapid eye movement sleep (REMS), and non-REMS
(NREMS) in the mammalian hypothalamus overlap both anatomically and functionally with …

Several studies have tried to identify the neurobiological bases of dream experiences,
nevertheless some questions are still at the centre of the debate. Here, we summarise the …