60 results found
    1. Neuroscience

    Defective memory engram reactivation underlies impaired fear memory recall in Fragile X syndrome

    Jie Li et al.
    Activity-dependent genetic labeling during behavioral learning shows Fragile-X syndrome model mice exhibit impaired hippocampal engram reactivation, and that enriched environment experience improves fear memory retrieval by enhancing engram reactivation efficacy.
    1. Cell Biology
    2. Neuroscience

    2018 Gairdner Awards: The past, present and future of light-gated ion channels and optogenetics

    Sheena A Josselyn
    Research into light-gated ion channels called channelrhodospins laid the foundations for the development of optogenetics, a technique that has gone on to revolutionize neuroscience.
    1. Immunology and Inflammation
    2. Neuroscience

    Differential accumulation of storage bodies with aging defines discrete subsets of microglia in the healthy brain

    Jeremy Carlos Burns et al.
    Two novel subsets of microglia identified by their unique autofluorescence profiles differ in their subcellular organization, proteomic signatures and in their response to aging and lysosomal dysfunction.
    1. Neuroscience

    Kv1.1 contributes to a rapid homeostatic plasticity of intrinsic excitability in CA1 pyramidal neurons in vivo

    Peter James Morgan et al.
    Short, theta-bursts of action potential firing decrease the global excitability of CA1 pyramidal neurons, providing an internal mechanism which could regulate their allocation to memory engrams.
    1. Neuroscience

    Stxbp1/Munc18-1 haploinsufficiency impairs inhibition and mediates key neurological features of STXBP1 encephalopathy

    Wu Chen et al.
    Two genetically distinct Stxbp1 haploinsufficiency mouse models exhibit seizures and impairments in cognitive, psychiatric, and motor functions, representing robust preclinical models of STXBP1 encephalopathy with both construct and face validity.
    1. Computational and Systems Biology
    2. Neuroscience

    Interneuronal mechanisms of hippocampal theta oscillations in a full-scale model of the rodent CA1 circuit

    Marianne J Bezaire et al.
    Spontaneous theta oscillations and interneuron-specific phase preferences emerge spontaneously in a full-scale model of the isolated hippocampal CA1 subfield, corroborating and extending recent experimental findings.
    1. Neuroscience

    Extracting grid cell characteristics from place cell inputs using non-negative principal component analysis

    Yedidyah Dordek et al.
    Computational modeling of the brain’s navigation system reveals that place cells can drive the formation of hexagonal patterns experimentally observed in grid cells activity.
    1. Neuroscience

    Hippocampal neurogenesis enhancers promote forgetting of remote fear memory after hippocampal reactivation by retrieval

    Rie Ishikawa et al.
    Forgetting of remote fear memory is promoted by increased hippocampal neurogenesis only after hippocampal reactivation by long time memory retrieval.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    Activation of GCN2 kinase by ribosome stalling links translation elongation with translation initiation

    Ryuta Ishimura et al.
    Activation of the integrated stress response by stalled translation elongation complexes attenuates neurodegeneration, and demonstrates a protective link between a decrease in the rate of translation initiation and defects in translation elongation.
    1. Neuroscience

    Dendritic sodium spikes are required for long-term potentiation at distal synapses on hippocampal pyramidal neurons

    Yujin Kim et al.
    At distal synapses onto hippocampal CA1 pyramidal neurons, synaptic plasticity is dependent on dendritically initiated sodium spikes, thus establishing a new role for voltage-gated sodium channels in the dendrites that may have important implications for how learning rules are implemented.

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