3,969 results found
    1. Neuroscience

    Movement-related coupling of human subthalamic nucleus spikes to cortical gamma

    Petra Fischer et al.
    When coupling between STN spikes and cortical gamma oscillations was strong, subsequent movement was initiated earlier, independent of changes in mean firing rates, demonstrating the importance of relative spike timing.
    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. Cell Biology
    2. Developmental Biology

    Notochord vacuoles absorb compressive bone growth during zebrafish spine formation

    Jennifer Bagwell et al.
    Live imaging and genetic analyses revealed that notochord vacuoles play a critical role in spine morphogenesis by absorbing vertebral bone growth, thus implicating notochord mechanics in congenital scoliosis.
    1. Neuroscience

    Selective attenuation of Ether-a-go-go related K+ currents by endogenous acetylcholine reduces spike-frequency adaptation and network correlation

    Edward D Cui, Ben W Strowbridge
    Acetylcholine, a common modulator in the brain, controls spike-frequency adaptation by specifically attenuating Ether-a-go-go related K+ currents, thereby explaining many cortical network statistical changes often observed in vivo.
    1. Neuroscience

    SpikeForest, reproducible web-facing ground-truth validation of automated neural spike sorters

    Jeremy Magland et al.
    Ten popular spike sorting codes are reproducibly benchmarked for accuracy on electrophysiology datasets from eleven laboratories with interactive web-based exploration of thousands of ground-truth units.
    1. Neuroscience

    Inference of nonlinear receptive field subunits with spike-triggered clustering

    Nishal P Shah et al.
    Nonlinear receptive field subunits in retinal ganglion cells are isolated and characterized by clustering spike-triggered stimuli, and validated on population responses to naturalistic and novel closed loop stimuli.
    1. Developmental Biology
    2. Evolutionary Biology

    A SoxB gene acts as an anterior gap gene and regulates posterior segment addition in a spider

    Christian Louis Bonatto Paese et al.
    Sox21b-1 regulates simultaneous formation of anterior segments and addition of posterior segments in a spider, which resembles segmentation in long- and short-germ insects, and suggests SoxB regulation of segmentation is an ancestral feature of arthropods.
    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. Neuroscience

    Distinct responses of Purkinje neurons and roles of simple spikes during associative motor learning in larval zebrafish

    Thomas C Harmon et al.
    Discrete classes of cerebellar Purkinje neurons show distinct changes in synaptic and spiking activity during motor learning, with simple spikes playing a shifting role during acquisition, expression, and maintenance of learned responses.

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