1,878 results found
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Kinesin Kip2 enhances microtubule growth in vitro through length-dependent feedback on polymerization and catastrophe

    Anneke Hibbel et al.
    The budding yeast kinesin Kip2 is a polymerase that uses its processive motility in a positive feedback loop to promote microtubule growth.
    1. Computational and Systems Biology

    Distributed task-specific processing of somatosensory feedback for voluntary motor control

    Mohsen Omrani et al.
    Somatosensory feedback is transmitted to many sensory and motor cortical regions within 25 milliseconds and ongoing behavioural tasks alter the spatiotemporal pattern of this perturbation-related activity, supporting rapid motor responses to attain behavioural goals.
    1. Cell Biology
    2. Computational and Systems Biology

    A positive-feedback-based mechanism for constriction rate acceleration during cytokinesis in Caenorhabditis elegans

    Renat N Khaliullin et al.
    Positive feedback between contractile ring myosin and compression-driven cortical flow can explain the exponential accumulation of contractile ring components and constriction rate acceleration that ensures timely cell separation during cytokinesis.
    1. Developmental Biology

    Nodal patterning without Lefty inhibitory feedback is functional but fragile

    Katherine W Rogers et al.
    Lefty-mediated feedback inhibition of Nodal signaling mitigates signaling perturbations, but is dispensable for development.
    1. Neuroscience

    Mesolimbic confidence signals guide perceptual learning in the absence of external feedback

    Matthias Guggenmos et al.
    Neural confidence signals can take the role of reward signals and explain perceptual learning without external feedback as a form of internal reinforcement learning.
    1. Neuroscience

    Feedback optimizes neural coding and perception of natural stimuli

    Chengjie G Huang et al.
    Neurophysiological and behavioral approaches reveal how coordinated input from descending pathways shapes the tuning properties of electrosensory neurons in order to optimize coding of natural stimuli through temporal whitening.
    1. Neuroscience

    Ultra-Rapid serial visual presentation reveals dynamics of feedforward and feedback processes in the ventral visual pathway

    Yalda Mohsenzadeh et al.
    Reducing visibility with higher image presentation rates increases recurrent processing demands along the visual processing pathway to resolve object recognition.
    1. Cell Biology
    2. Computational and Systems Biology

    Nonlinear feedback drives homeostatic plasticity in H2O2 stress response

    Youlian Goulev et al.
    Nonlinear H2O2 scavenging by peroxiredoxins drives acquired stress resistance and replicative lifespan hormesis.
    1. Immunology and Inflammation

    T cells translate individual, quantal activation into collective, analog cytokine responses via time-integrated feedbacks

    Karen E Tkach et al.
    Experiment-driven quantitative model of IL-2 secretion demonstrates how T cells integrate their digital antigen responses into an analog-scaled output.
    1. Developmental Biology

    Feedback regulation of cytoneme-mediated transport shapes a tissue-specific FGF morphogen gradient

    Lijuan Du et al.
    FGF morphogen gradient self-generates a recipient tissue-specific contour by feedback-regulating its cytoneme-mediated dispersion.

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