21 results found
    1. Neuroscience

    Competition for synaptic building blocks shapes synaptic plasticity

    Jochen Triesch et al.
    Computational model reveals how the fast exchange of neurotransmitter receptors between synapses induces a competition leading to a transient form of heterosynaptic plasticity and shaping the induction of homosynaptic plasticity.
    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. Neuroscience

    Structural plasticity of dendritic secretory compartments during LTP-induced synaptogenesis

    Yelena D Kulik et al.
    The secretory and recycling components of neuronal dendrites, smooth endoplasmic reticulum and endosomes, were discovered to support synaptogenesis underlying a cellular mechanism of learning and memory in the developing brain.
    1. Neuroscience

    Learning induces the translin/trax RNase complex to express activin receptors for persistent memory

    Alan Jung Park et al.
    Combination of in vitro and in vivo approaches reveal how learning suppresses the microRNA system to trigger de novo synthesis of plasticity proteins, a missing link in the current model of microRNA-mediated translation in persistent synaptic plasticity and memory.
    1. Cell Biology
    2. Neuroscience

    A novel synaptic plasticity rule explains homeostasis of neuromuscular transmission

    Gilles Ouanounou et al.
    Skeletal muscle cells constantly monitor their own activity and that of their partner neuron at synapses, enabling them to provide the neuron with feedback regarding neurotransmitter release.
    1. Neuroscience

    Theta-modulation drives the emergence of connectivity patterns underlying replay in a network model of place cells

    Panagiota Theodoni et al.
    The learning rate for novel spatial environments in model networks of place cells is determined by the product of the window for plasticity and the auto-correlation of place-cell activity.
    1. Computational and Systems Biology
    2. Neuroscience

    Fast and flexible sequence induction in spiking neural networks via rapid excitability changes

    Rich Pang, Adrienne L Fairhall
    Biologically plausible changes in the excitabilities of single neurons may suffice to selectively modulate sequential network dynamics, without modifying of recurrent connectivity.
    1. Neuroscience

    Constitutive activation of kappa opioid receptors at ventral tegmental area inhibitory synapses following acute stress

    Abigail M Polter et al.
    Rats exposed to a single stressful event experience days-long constitutive activation of the kappa opioid receptor at inhibitory synapses in part of the brain’s reward system, which increases their drug-seeking behavior.
    1. Neuroscience

    Neuronal activity determines distinct gliotransmitter release from a single astrocyte

    Ana Covelo, Alfonso Araque
    A single astrocyte can decode neuronal activity and, consequently, release distinct gliotransmitters that differentially regulate neurotransmission at single hippocampal synapses.
    1. Neuroscience

    Magnesium efflux from Drosophila Kenyon cells is critical for normal and diet-enhanced long-term memory

    Yanying Wu et al.
    Regulated neuronal magnesium efflux is a critical element of normal and magnesium-enhanced memory.

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