5,067 results found
    1. Neuroscience

    Motor selection dynamics in FEF explain the reaction time variance of saccades to single targets

    Christopher K Hauser et al.
    Oculomotor circuits are always busy planning the next eye movement, and this explains why, when a visual target appears, some eye movements toward it are produced very quickly whereas others take a long time to prepare.
    1. Neuroscience

    Targeted deletion of AKAP7 in dentate granule cells impairs spatial discrimination

    Brian W Jones et al.
    The PKA anchoring protein, AKAP7, localizes PKA in dentate granule mossy fibers and this localization plays an important role in contextual discrimination and cAMP-induced synaptic plasticity.
    1. Neuroscience

    A predictive focus of gain modulation encodes target trajectories in insect vision

    Steven D Wiederman et al.
    Visual neurons in the dragonfly predict the path of a moving target, even when it is occluded or crosses from one eye to the other.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Physical limits of flow sensing in the left-right organizer

    Rita R Ferreira et al.
    Large-scale in vivo imaging of the zebrafish left-right organizer (Kupffer's vesicle) combined with fluid dynamics calculations allows to quantitatively test the possible flow detection mechanisms and supports the flow transport of chemical signals as the mechanism of side determination.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Immune genes are hotspots of shared positive selection across birds and mammals

    Allison J Shultz, Timothy B Sackton
    Pathogens, particularly viruses, target the same genes over deep evolutionary time, resulting in shared signatures of positive selection and transcriptional responses at the same genes.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    3.3-Å resolution cryo-EM structure of human ribonucleotide reductase with substrate and allosteric regulators bound

    Edward J Brignole et al.
    Cryo-electron microscopy structures of human ribonucleotide reductase reveal molecular details of substrate selection and allosteric inhibition through assembly of its large subunit into a ring that excludes its small subunit.
    1. Neuroscience

    SynEM, automated synapse detection for connectomics

    Benedikt Staffler et al.
    The detection of chemical synapses in 3-dimensional electron microscopy data has been automated such that synapses in large-scale connectivity maps of the cerebral cortex, connectomes, can be charted without the need for human interaction.
    1. Neuroscience

    A causal relationship between face-patch activity and face-detection behavior

    Srivatsun Sadagopan et al.
    Disrupting the activity of the medial lateral face patch (ML) using fMRI-targeted microinjections of muscimol leads to anatomically and categorically specific impairments in a naturalistic face detection task.
    1. Genetics and Genomics

    Background selection and biased gene conversion affect more than 95% of the human genome and bias demographic inferences

    Fanny Pouyet et al.
    Background selection and GC-biased gene conversion impact the human genome to a much larger extent than previously recognized in low and high recombination rate regions, respectively.
    1. Chromosomes and Gene Expression
    2. Stem Cells and Regenerative Medicine

    Decoupling the impact of microRNAs on translational repression versus RNA degradation in embryonic stem cells

    Jacob W Freimer et al.
    The deletion of Ddx6 results in the translational upregulation, but not transcript stabilization, of microRNA targets in embryonic stem cells while largely phenocopying the overall impact of global microRNA loss.

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