Slow-wave sleep articles within Nature Communications

Featured

  • Article
    | Open Access

    Whether and how sharp-wave ripples (SWRs) accompany mental states that are less closely linked to events in the immediate environment are not fully understood. Here authors recorded SWRs from hippocampus of 10 epilepsy patients for up to 15 days with experience sampling. SWR rates showed circadian fluctuation and were associated with self-generated thoughts such as mind wandering.

    • Takamitsu Iwata
    • , Takufumi Yanagisawa
    •  & Haruhiko Kishima

  • Article
    | Open Access

    Using large-scale recordings from cortical and subcortical brain regions in behaving mice, the authors reveal the presence of a respiratory corollary discharge in mice, that modulates neural activity across these circuits and couples hippocampal sharp-wave ripples and cortical DOWN/UP state transitions.

    • Nikolaos Karalis
    •  & Anton Sirota

  • Article
    | Open Access

    Changes in EEG delta-activity are widely used as proxy of sleep propensity. Here the authors demonstrate in mice and humans the presence of two types of delta-waves, only one of which reports on prior sleep-wake history with dynamics denoting a wake-inertia process accompanying deepest non-rapid-eye-movement sleep (NREM) sleep.

    • Jeffrey Hubbard
    • , Thomas C. Gent
    •  & Paul Franken

  • Article
    | Open Access

    NREM sleep in rodents is characterized by internal dynamics in the form of UP/DOWN states in the neocortex and SWRs in the hippocampus. Here, the authors report that a mean field model with excitable dynamics captures the transition probabilities between these states from rodent sleep data.

    • Daniel Levenstein
    • , György Buzsáki
    •  & John Rinzel

  • Article
    | Open Access

    Circulating hormones undergo fluctuations during sleep. Here, the authors increase electroencephalographic slow oscillations (SO) during sleep in men using an auditory closed-loop stimulation, and show that the circulating level of cortisol, aldosterone and immune cell count can be altered.

    • Luciana Besedovsky
    • , Hong-Viet V. Ngo
    •  & Jan Born

  • Article
    | Open Access

    In addition to circadian and homoeostatic drives, motivational levels influence sleep−wake cycles. Here the authors demonstrate that adenosine receptor-expressing neurons in the nucleus accumbens core that project to the ventral pallidum are inhibited by motivational stimuli and are causally involved in the control of slow-wave sleep.

    • Yo Oishi
    • , Qi Xu
    •  & Michael Lazarus

  • Article
    | Open Access

    Slow oscillations between cortical Up and Down states are a defining feature of deep sleep, but their function is not well understood. Here the authors study Up/Down states in acute slices of entorhinal cortex, and find that Up states promote the weakening of subthreshold synaptic inputs, while suprathreshold inputs are preserved or strengthened.

    • Julian Bartram
    • , Martin C. Kahn
    •  & Edward O. Mann

  • Article
    | Open Access

    Deep sleep is hypothesized to restore the brain's capacity to learn. Here the authors provide causal evidence by specifically perturbing slow wave activity over the motor cortex during NREM sleep in humans and demonstrate a reduction in neurophysiological markers of plasticity and capacity for motor learning.

    • Sara Fattinger
    • , Toon T. de Beukelaar
    •  & Reto Huber

  • Article
    | Open Access

    Neuronal learning activity is reactivated during sleep but the dynamics of this reactivation in humans are still poorly understood. Here the authors show that memory processing occurs during all stages of sleep in humans but that reprocessing of memory content in REM and non-REM sleep has different effects on later memory performance.

    • M. Schönauer
    • , S. Alizadeh
    •  & S. Gais

  • Article
    | Open Access

    Whether and how birds sleep during long-distance flights has remained a mystery. Here, Rattenborg and colleagues show for the first time that frigatebirds can sleep during flight, but do so in remarkably small amounts.

    • Niels C Rattenborg
    • , Bryson Voirin
    •  & Alexei L. Vyssotski

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