452 results found
    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.
    1. Neuroscience

    Dendritic Na+ spikes enable cortical input to drive action potential output from hippocampal CA2 pyramidal neurons

    Qian Sun et al.
    In the hippocampus, dendritic Na + spikes are required for signals from the entorhinal cortex to drive action potentials in CA2-but not CA1 or CA3-pyramidal neurons.
    1. Neuroscience

    Dendritic spikes in hippocampal granule cells are necessary for long-term potentiation at the perforant path synapse

    Sooyun Kim et al.
    A novel mechanism of local plasticity in the distal dendrites of hippocampal granule cells.
    1. Neuroscience

    NMDA spikes mediate amplification of inputs in the rat piriform cortex

    Amit Kumar et al.
    Dendrites of pyramidal neurons in piriform cortex can initiate NMDA spikes, which may serve to amplify odor responses, and provide combination selectivity underlying 'discontinuous' odor receptive fields in these neurons.
    1. Neuroscience

    Dendritic small conductance calcium-activated potassium channels activated by action potentials suppress EPSPs and gate spike-timing dependent synaptic plasticity

    Scott L Jones et al.
    The activation of small-conductance calcium-activated potassium channels in spines by action potentials regulates the induction of spike-timing dependent synaptic plasticity during low-frequency single action potential–EPSP pairing.
    1. Neuroscience

    Dendritic nonlinearities are tuned for efficient spike-based computations in cortical circuits

    Balázs B Ujfalussy et al.
    Dendrites combine the inputs that they receive from other neurons using calculations that have been optimized for those particular input patterns.
    1. Cell Biology
    2. Neuroscience

    Astrocytes refine cortical connectivity at dendritic spines

    W Christopher Risher et al.
    Spines with multiple excitatory contacts are potential sites for competition between thalamic and cortical axons, which is regulated by the astrocytes through the secreted synaptogenic protein hevin.
    1. Neuroscience

    Neurexin directs partner-specific synaptic connectivity in C. elegans

    Alison Philbrook et al.
    Investigation of synapse development using a single neuron system illuminates how individual neurons specify connectivity with their postsynaptic partners and the central role of the synaptic organizer neurexin in this process.
    1. Computational and Systems Biology
    2. Neuroscience

    Inhibition enhances spatially-specific calcium encoding of synaptic input patterns in a biologically constrained model

    Daniel B Dorman et al.
    Inhibition enhances the spatial specificity of high calcium influx for cooperatively stimulated synapses, suggesting that inhibitory inputs may regulate both synapse-specific and heterosynaptic plasticity to support learning and memory.
    1. Cell Biology
    2. Neuroscience

    Ablation of SNX6 leads to defects in synaptic function of CA1 pyramidal neurons and spatial memory

    Yang Niu et al.
    SNX6 regulates the distribution of a protein called Homer1b/c to distal dendrites, enabling the latter to stabilize the synapses and thereby support memory formation.

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