35 results found
    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

    Quantitative properties of a feedback circuit predict frequency-dependent pattern separation

    Oliver Braganza et al.
    The feedback inhibitory microcircuit of the dentate gyrus likely boosts pattern separation during gamma oscillations.
    1. Neuroscience

    Hippocampal low-frequency stimulation prevents seizure generation in a mouse model of mesial temporal lobe epilepsy

    Enya Paschen et al.
    Optogenetic and electrical low-frequency stimulation in the sclerotic hippocampus prevents the emergence of spontaneous focal and evoked generalized seizures in a mouse epilepsy model.
    1. Neuroscience

    Somatostatin-positive interneurons in the dentate gyrus of mice provide local- and long-range septal synaptic inhibition

    Mei Yuan et al.
    Somatostatin-expressing interneurons of the rodent dentate gyrus fall into at least two functionally distinct interneuron types with different synaptic integrations into the local dentate gyrus and the more distant medial septum neuronal network.
    1. Neuroscience

    Targeted deletion of AKAP7 in dentate granule cells impairs spatial discrimination

    Brian W Jones et al.
    The PKA anchoring protein, AKAP7, localizes PKA in dentate granule mossy fibers and this localization plays an important role in contextual discrimination and cAMP-induced synaptic plasticity.
    1. Neuroscience

    Silent synapses generate sparse and orthogonal action potential firing in adult-born hippocampal granule cells

    Liyi Li et al.
    Young neurons of the adult hippocampus are synaptically activated by a small group of non-overlapping afferent excitatory fibers, due to high synaptic gain and sparse connectivity, important for sparse and orthogonal coding during hippocampal information processing.
    1. Neuroscience

    Differential inhibition onto developing and mature granule cells generates high-frequency filters with variable gain

    María Belén Pardi et al.
    Immature and mature granule cells in the hippocampal dentate gyrus show differing responses to physiologically relevant stimuli, with immature cells better at encoding stimulus frequency and mature cells better at encoding stimulus onset.
    1. Neuroscience

    Exercise-induced enhancement of synaptic function triggered by the inverse BAR protein, Mtss1L

    Christina Chatzi et al.
    Single episodes of voluntary exercise induced a functional increase in hippocampal synapses mediated by activity-dependent expression of the BAR protein Mtss1L, acting as a novel early effector of synapse formation.
    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

    Paradoxical network excitation by glutamate release from VGluT3+ GABAergic interneurons

    Kenneth A Pelkey et al.
    Glutamate cotransmission from a subset of cortical GABAergic interneurons can promote network hyperexcitability.

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