125 results found
    1. Neuroscience

    An electrophysiological marker of arousal level in humans

    Janna D Lendner et al.
    Non-oscillatory brain activity can be used to monitor arousal levels during both NREM and REM sleep as well as under general anesthesia with propofol.
    1. Neuroscience

    Cerebral mGluR5 availability contributes to elevated sleep need and behavioral adjustment after sleep deprivation

    Sebastian C Holst et al.
    Multi-modal imaging, genetic and behavioral findings in humans and mice revealed that metabotropic glutamate receptors of subtype 5 contribute to the molecular machinery keeping track of sleep need and coping with physiological and behavioral consequences of sleep loss, pointing to novel targets for improved wakefulness and sleep.
    1. Neuroscience

    Dissociating orexin-dependent and -independent functions of orexin neurons using novel Orexin-Flp knock-in mice

    Srikanta Chowdhury et al.
    Subtraction analysis using novel Orexin-Flp mice isolated physiological importance of orexin peptides.
    1. Neuroscience

    mPFC spindle cycles organize sparse thalamic activation and recently active CA1 cells during non-REM sleep

    Carmen Varela, Matthew A Wilson
    Sleep spindles provide a temporal framework to organize the reactivation of behaviorally relevant CA1 cells and sparsely active cells in the limbic thalamus.
    1. Neuroscience

    Cholinergic modulation of hippocampal calcium activity across the sleep-wake cycle

    Heng Zhou et al.
    Dynamic calcium activity in the hippocampus changes markedly across behavioral and physiological states and depends on muscarinic acetylcholine receptor activation.
    1. Neuroscience

    Identification of octopaminergic neurons that modulate sleep suppression by male sex drive

    Daniel R Machado et al.
    The balance between sleep and sex drives determines whether male flies sleep or court, and a subset of octopaminergic neurons interact with the Fruitless-expressing courtship circuit to suppress sleep for sustained courtship.
    1. Neuroscience

    Identification of Redeye, a new sleep-regulating protein whose expression is modulated by sleep amount

    Mi Shi et al.
    A gene found in Drosophila, and named redeye, encodes a protein that accumulates during sleep deprivation and forms part of the homeostatic system that promotes and maintains sleep.
    1. Neuroscience

    GABA neurons in the ventral tegmental area regulate non-rapid eye movement sleep in mice

    Srikanta Chowdhury et al.
    Functional identification of GABAergic neurons in the ventral tegmental area as a important neuronal subpopulation regulating non-rapid eye movement (NREM) sleep in mice.
    1. Neuroscience

    Norepinephrine is required to promote wakefulness and for hypocretin-induced arousal in zebrafish

    Chanpreet Singh et al.
    Experiments in genetically modified zebrafish that are unable to produce norepinephrine show that this neurotransmitter promotes wakefulness by mediating the effects of the neuropeptide hypocretin.
    1. Neuroscience

    State-dependent brainstem ensemble dynamics and their interactions with hippocampus across sleep states

    Tomomi Tsunematsu et al.
    Sub-second pontine waves functionally interact with hippocampal population activity in a state-dependent manner across sleep states, while brainstem ensemble dynamics exhibit slow, long-lasting state-predictive activity.

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