314 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 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

    Glutamate is required for depression but not potentiation of long-term presynaptic function

    Zahid Padamsey et al.
    Electrophysiological and optical analysis of neurotransmitter release at central synapses reveals that glutamate signalling is not required for the long-term potentiation (LTP) of presynaptic function, and instead only promotes presynaptic long-term depression (LTD).
    1. Neuroscience

    Compensation for PKMζ in long-term potentiation and spatial long-term memory in mutant mice

    Panayiotis Tsokas et al.
    The enzyme PKMzeta is crucial for the maintenance of long-term memories, but a closely related enzyme provides a back-up should PKMzeta fail, thus explaining the controversy over why deleting the gene for PKMzeta may not appear to impair memory.
    1. Neuroscience

    The AMPA receptor-associated protein Shisa7 regulates hippocampal synaptic function and contextual memory

    Leanne J M Schmitz et al.
    Shisa7 is a bona-fide AMPAR modulatory protein affecting channel kinetics of hippocampal AMPARs, and is necessary for synaptic plasticity and memory recall.
    1. Neuroscience

    Translational control by eIF2α phosphorylation regulates vulnerability to the synaptic and behavioral effects of cocaine

    Wei Huang et al.
    Vulnerability to cocaine addiction during adolescence depends on translational control.
    1. Neuroscience

    Synaptic plasticity and cognitive function are disrupted in the absence of Lrp4

    Andrea M Gomez et al.
    Lrp4 mutant mice display profound deficits in cognitive tasks that assess learning and memory with disruptions in the subcellular organization of synaptic inputs and synaptic plasticity in the hippocampus.
    1. Neuroscience

    CCR5 is a suppressor for cortical plasticity and hippocampal learning and memory

    Miou Zhou et al.
    Repression of the G protein-coupled chemokine receptor CCR5 enhances MAPK/CREB signaling, long-term potentiation, somatosensory cortical plasticity, and learning and memory, while CCR5 over-activation by viral proteins may contribute to HIV-associated cognitive deficits.
    1. Cell Biology
    2. Neuroscience

    Mitochondrial support of persistent presynaptic vesicle mobilization with age-dependent synaptic growth after LTP

    Heather L Smith et al.
    Three-dimensional electron microscopy (3DEM) demonstrates the dependence on presynaptic mitochondria for vesicle mobilization as dendritic spines are silently added at P15 or synapses are silently enlarged in adults after long-term potentiation.
    1. Neuroscience

    The fate of hippocampal synapses depends on the sequence of plasticity-inducing events

    J Simon Wiegert et al.
    Non-invasive optogenetic induction of synaptic plasticity revealed that long-term potentiation and long-term depression alter the chances of a synapse to survive the next seven days.

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