1,720 results found
    1. Computational and Systems Biology
    2. Neuroscience

    Task-dependent optimal representations for cerebellar learning

    Marjorie Xie, Samuel P Muscinelli ... Ashok Litwin-Kumar
    Classical theoretical approaches to studying the cerebellar cortex are generalized to a broader set of learning tasks, revealing that the optimal value for the sparsity of granule cell activity is task-dependent.
    1. Neuroscience

    Complementary codes for odor identity and intensity in olfactory cortex

    Kevin A Bolding, Kevin M Franks
    Different features of an odor can be represented in mouse olfactory cortex using the particular ensemble of responsive neurons to represent odor identity and the synchrony of the ensemble activity to represent odor intensity.
    1. Neuroscience

    Sensory cortex is optimized for prediction of future input

    Yosef Singer, Yayoi Teramoto ... Nicol S Harper
    Prediction of future input explains diverse neural tuning properties in sensory cortex.
    1. Neuroscience

    Sparse activity of identified dentate granule cells during spatial exploration

    Maria Diamantaki, Markus Frey ... Andrea Burgalossi
    Morphologically-mature granule cells with complex dendritic trees contribute to a sparse representation of space in the rat dentate gyrus.
    1. Neuroscience

    Mechanisms and functions of respiration-driven gamma oscillations in the primary olfactory cortex

    Joaquin Gonzalez, Pablo Torterolo, Adriano BL Tort
    Computational analyses of in-vivo cerebral activity show that gamma oscillations in the olfactory cortex originate from local feedback inhibition following each sniff and serve to segregate competing odor representations through a winner-take-all process, providing an optimal window to decode odor.
    1. Neuroscience

    Homeostatic synaptic normalization optimizes learning in network models of neural population codes

    Jonathan Mayzel, Elad Schneidman
    An accurate and efficient biologically plausible statistical model of the spiking activity of neural populations shows computational benefits of homeostatic synaptic scaling in learning large neural population codes.
    1. Developmental Biology
    2. Neuroscience

    Presynaptic developmental plasticity allows robust sparse wiring of the Drosophila mushroom body

    Najia A Elkahlah, Jackson A Rogow ... E Josephine Clowney
    Sensory innervation density in the insect associative learning center is set by postsynaptic cells and accomplished by flexible allocation of processes by presynaptic cells.
    1. Neuroscience

    Large-scale two-photon imaging revealed super-sparse population codes in the V1 superficial layer of awake monkeys

    Shiming Tang, Yimeng Zhang ... Tai Sing Lee
    Two-photon imaging reveals super-sparse responses to natural images in primate V1, which carry sufficient information for discrimination of the input natural images with high accuracy.
    1. Neuroscience

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

    Liyi Li, Sébastien Sultan ... Josef Bischofberger
    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

    How many neurons are sufficient for perception of cortical activity?

    Henry WP Dalgleish, Lloyd E Russell ... Michael Häusser
    Targeted optogenetic activation of small ensembles of neurons is sufficient to trigger a behavioral report while recruiting matched network suppression, suggesting exquisite sensitivity despite network mechanisms that maintain sparseness.

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