1,093 results found
    1. Neuroscience

    Electrical and Ca2+ signaling in dendritic spines of substantia nigra dopaminergic neurons

    Travis A Hage et al.
    Dopaminergic cells uniquely receive input from a roughly equal mixture of synapses on dendritic spines and synapses formed directly on dendrites.
    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

    Ultrastructural comparison of dendritic spine morphology preserved with cryo and chemical fixation

    Hiromi Tamada et al.
    Cryo preservation of brain tissue reveals dendritic spines with thinner necks compared to those prepared with chemical fixation.
    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. 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

    C. elegans neurons have functional dendritic spines

    Andrea Cuentas-Condori et al.
    Caenorhabditis elegans has bona fide dendritic spines, suggesting that the advantages of small model organisms, such as genetic manipulations and live-cell imaging, can be exploited to study dendritic spines.
    1. Cell Biology
    2. Neuroscience

    Synaptic pruning in the female hippocampus is triggered at puberty by extrasynaptic GABAA receptors on dendritic spines

    Sonia Afroz et al.
    Extrasynaptic GABAA receptors that emerge at puberty trigger adolescent synaptic pruning; pruning is prevented and cognition is impaired if the receptors are absent.
    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. Cell Biology
    2. Neuroscience

    Specific depletion of the motor protein KIF5B leads to deficits in dendritic transport, synaptic plasticity and memory

    Junjun Zhao et al.
    Two homologous kinesin motors, KIF5A and KIF5B, have distinct functions in dendritic spine morphogenesis, and KIF5B plays a role in synaptic plasticity and memory.
    1. Neuroscience

    Palmitoylation of LIM Kinase-1 ensures spine-specific actin polymerization and morphological plasticity

    Joju George et al.
    The protein-lipid modification palmitoylation targets the kinase LIMK1 to dendritic spines to ensure precise control of the size of individual spines in response to synaptic activation.

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