5,502 results found
    1. Neuroscience

    UP-DOWN cortical dynamics reflect state transitions in a bistable network

    Daniel Jercog et al.
    Population cortical recordings and computational network modeling support a novel mechanism underlying spontaneous UP-DOWN dynamics consisting on non-rhythmic transitions between a silent attractor and a low-rate inhibition-stabilized attractor.
    1. Neuroscience

    Bottom-up and top-down influences at untrained conditions determine perceptual learning specificity and transfer

    Ying-Zi Xiong et al.
    Perceptual learning is specific because of the absence of bottom-up stimulation and top-down modulation at the untrained conditions.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    CpG and UpA dinucleotides in both coding and non-coding regions of echovirus 7 inhibit replication initiation post-entry

    Jelke Jan Fros et al.
    RNA virus replication is attenuated by an intrinsic restriction mechanism after introducing CpG/UpA dinucleotides into both non-translated and coding regions of viral genomes, which may be exploited in the design of attenuated virus vaccines.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Impact of the scale-up of piped water on urogenital schistosomiasis infection in rural South Africa

    Frank Tanser et al.
    Scale-up of safe water supplies decreases a child's risk of urogenital schistosomiasis infection by eight-fold in a typical rural African population.
    1. Microbiology and Infectious Disease

    RNA virus attenuation by codon pair deoptimisation is an artefact of increases in CpG/UpA dinucleotide frequencies

    Fiona Tulloch et al.
    Attenuating candidate live virus vaccines by incorporating unfavoured codon pairs to reduce translation efficiency is actually mediated though changes in frequencies of CpG and UpA dinucleotides, which make viruses more visible to the innate immune system.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis of nucleic-acid recognition and double-strand unwinding by the essential neuronal protein Pur-alpha

    Janine Weber et al.
    The crystal structure of Pur-alpha in complex with DNA reveals its molecular mechanisms of nucleic-acid binding and unwinding, allowing for a better understanding of its essential role in neurons.
    1. Computational and Systems Biology
    2. Neuroscience

    Bottom-up and top-down computations in word- and face-selective cortex

    Kendrick N Kay, Jason D Yeatman
    A computational model reveals how response properties of category-selective regions in the visual cortex reflect both bottom-up stimulus-driven signals and top-down attentional signals from the parietal cortex.
    1. Cell Biology

    SUMO peptidase ULP-4 regulates mitochondrial UPR-mediated innate immunity and lifespan extension

    Kaiyu Gao et al.
    SUMOylation regulates mitochondrial UPR signaling through modulation of transcription factors DVE-1 and ATFS-1.
    1. Neuroscience

    Dissociable laminar profiles of concurrent bottom-up and top-down modulation in the human visual cortex

    Samuel JD Lawrence et al.
    Neural activity in the visual system is increased in different layers of the neocortex for bottom-up and top-down modulations.

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