4,860 results found
    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.
    1. Neuroscience

    Paradoxical response reversal of top-down modulation in cortical circuits with three interneuron types

    Luis Carlos Garcia del Molino et al.
    Computational simulations and mathematical derivations reveal why the response of neural populations to external modulation is sometimes reversed with respect to what intuition would lead to believe in cortical circuits with multiple types of inhibitory neurons.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    The evolution of adhesiveness as a social adaptation

    Thomas Garcia et al.
    Mathematical modeling supports a scenario where cell-cell adhesion gradually evolves through natural selection, leading to the emergence of cohesive aggregates in microbial populations.
    1. Neuroscience

    Modulation of tonotopic ventral medial geniculate body is behaviorally relevant for speech recognition

    Paul Glad Mihai et al.
    Ultra-high field neuroimaging dissects the ventral medial geniculate body (vMGB) of the primary auditory pathway from other MGB subregions and reveals that vMGB top-down modulation is relevant for speech recognition.
    1. Neuroscience

    Push-pull competition between bottom-up and top-down auditory attention to natural soundscapes

    Nicholas Huang, Mounya Elhilali
    Everyday soundscapes dynamically engage attention towards target sounds or salient ambient events, with both attentional forms engaging the same fronto-parietal network but in a push-pull competition for limited neural resources.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Recurrent evolution of high virulence in isolated populations of a DNA virus

    Tom Hill, Robert L Unckless
    The same host–virus interactions can evolve multiple times in nature, due to the high effective mutation rate of viruses, and provide interesting systems of study.
    1. Epidemiology and Global Health

    Coverage and system efficiencies of insecticide-treated nets in Africa from 2000 to 2017

    Samir Bhatt et al.
    Insecticide-treated net requirements for Africa have been underestimated, but mitigating for inefficiencies in net distributions can produce a cost effective path to universal coverage.
    1. Neuroscience

    Cortical encoding of acoustic and linguistic rhythms in spoken narratives

    Cheng Luo, Nai Ding
    In the processing of spoken narratives, bottom-up acoustic cues and top-down linguistic knowledge separately contribute to neural construction of linguistic units.
    1. Neuroscience

    A Toll-receptor map underlies structural brain plasticity

    Guiyi Li et al.
    Structural brain plasticity is encoded in the topographic distribution of Toll receptors and their ability to switch between alternative signalling outcomes, thus translating diverse sensory experience into structural change.
    1. Neuroscience

    Alterations of in vivo CA1 network activity in Dp(16)1Yey Down syndrome model mice

    Matthieu Raveau et al.
    CA1 physiology is altered in the hippocampus of Down syndrome mice during both spatial exploration and rest, paralleled by an increase in populations of interneurons responsible for single cell and network synchronization.

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