11 results found
    1. Computational and Systems Biology
    2. Neuroscience

    Biophysical mechanisms in the mammalian respiratory oscillator re-examined with a new data-driven computational model

    Ryan S Phillips et al.
    Computational modeling motivated by recent experiments clarifies biophysical mechanisms generating the rhythm and amplitude of breathing at the level of neurons and brain circuits in mammals.
    1. Neuroscience

    Dual mechanisms of opioid-induced respiratory depression in the inspiratory rhythm-generating network

    Nathan A Baertsch et al.
    Opioids cause hyperpolarization and pre-synaptic suppression among a subset of preBötzinger Complex neurons to impair respiratory rhythmogenesis.
    1. Computational and Systems Biology
    2. Neuroscience

    Brain Networks: Modeling breathing rhythms

    Jan-Marino Ramirez, Nathan A Baertsch
    Computational models are helping researchers to understand how certain properties of neurons contribute to respiratory rhythms.
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    1. Neuroscience

    Laser ablation of Dbx1 neurons in the pre-Bötzinger complex stops inspiratory rhythm and impairs output in neonatal mice

    Xueying Wang et al.
    Laser-ablating neurons of a single genetic class reveals that Dbx1-derived interneurons comprise core respiratory rhythmogenic and premotor circuits and provides quantitative cellular parameters that govern network functionality
    1. Neuroscience

    Lognormal firing rate distribution reveals prominent fluctuation–driven regime in spinal motor networks

    Peter C Petersen, Rune W Berg
    Neuronal participation in generation of motor patterns in the spinal circuits is lognormal, which is an indication of a rich diversity of activity within the mean-driven as well as the fluctuation-driven regimes.
    1. Neuroscience

    Dbx1 precursor cells are a source of inspiratory XII premotoneurons

    Ann L Revill et al.
    Building on previous work (Wang et al., 2014), we use a combination of genetic, electrophysiology and laser ablation approaches to identify a developmentally defined population of neurons that are a significant source of clinically relevant inspiratory drive to XII motoneurons.
    1. Neuroscience

    Interactions between respiratory oscillators in adult rats

    Robert TR Huckstepp et al.
    Active expiration in anesthetized rats is driven by the lateral parafacial region, but requires an additional form of excitation from another source.
    1. Neuroscience

    Long ascending propriospinal neurons provide flexible, context-specific control of interlimb coordination

    Amanda M Pocratsky et al.
    Conditional silencing of long ascending propriospinal neurons disrupts interlimb coordination of the fore and hindlimb pairs, but in a highly context-specific manner.
    1. Cell Biology

    The adhesion function of the sodium channel beta subunit (β1) contributes to cardiac action potential propagation

    Rengasayee Veeraraghavan et al.
    Structural and functional investigations identify a structural unit for ephaptic coupling in the heart, and provide the mechanistic basis for a novel strategy for the treatment of arrhythmias.
    1. Neuroscience

    Coupling between fast and slow oscillator circuits in Cancer borealis is temperature-compensated

    Daniel Powell et al.
    The mechanism that couples two rhythmic circuits is maintained over a large temperature range although both circuits are temperature-sensitive.

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