4,541 results found
    1. Neuroscience

    A neural-level model of spatial memory and imagery

    Andrej Bicanski, Neil Burgess
    The BB model explains spatial cognition in terms of interactions between specific neuronal populations, providing a common computational framework for the human neuropsychological and in vivo animal electrophysiological literatures.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    ATR/Mec1 prevents lethal meiotic recombination initiation on partially replicated chromosomes in budding yeast

    Hannah G Blitzblau, Andreas Hochwagen
    During meiosis, budding yeast use a checkpoint involving the protein Mec1 to prevent the formation of double-strand breaks in DNA that has not completed replication.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Evolution of multicellularity by collective integration of spatial information

    Enrico Sandro Colizzi et al.
    Selection for undifferentiated multicellularity emerges in an evolutionary cell-based model because a collective of cells performs chemotaxis better than single cells in a noisy environment.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Environment determines evolutionary trajectory in a constrained phenotypic space

    David T Fraebel et al.
    Experimental evolution shows that when selection acts on two traits constrained by a trade-off, the direction of phenotypic evolution depends on the environment.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Asynchrony between virus diversity and antibody selection limits influenza virus evolution

    Dylan H Morris et al.
    Despite the virus' error prone polymerase, influenza virus antigenic evolution is rare, even in previously immune hosts, virus replication occurs before producing new antibodies.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Adequate immune response ensured by binary IL-2 and graded CD25 expression in a murine transfer model

    Franziska Fuhrmann et al.
    A murine adoptive transfer model shows that binary IL-2 and graded CD25 expression tailor the T helper cell response to the antigen amount in vivo.
    1. Cell Biology

    Cortical dynein pulling mechanism is regulated by differentially targeted attachment molecule Num1

    Safia Omer et al.
    Dynein-dependent microtubule-cortex interactions – "side-on" versus "end-on" pulling – are regulated by cortical ER and mediated by distinct pools of cortical anchor that are differentially localized along the cell periphery.
    1. Cell Biology

    β-blockers augment L-type Ca2+ channel activity by targeting spatially restricted β2AR signaling in neurons

    Ao Shen et al.
    FRET biosensor-based measurement of cAMP signaling and single-channel recording reveal that β-blockers trigger local activation of adrenergic receptors and calcium channels in primary neurons.
    1. Neuroscience

    Recurrent network model for learning goal-directed sequences through reverse replay

    Tatsuya Haga, Tomoki Fukai
    The combination of short-term and long-term plasticity enables hippocampus to learn goal-directed paths through replay in a reversed order.
    1. Neuroscience

    Activities of visual cortical and hippocampal neurons co-fluctuate in freely moving rats during spatial behavior

    Daniel Christopher Haggerty, Daoyun Ji
    As rats learn to traverse back and forth on a track, visual cortical neurons fire at specific locations and functionally interact with those hippocampal place cells representing the same locations.

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