9,195 results found
    1. Ecology
    2. Evolutionary Biology

    Quorums enable optimal pooling of independent judgements in biological systems

    James AR Marshall et al.
    Consideration of signal detection theory shows how decision ecology relates to optimal collective decisions, helping explain the prevalence of quorum-sensing in even the simplest collective systems, such as bacterial communities.
    1. Neuroscience

    Sources of noise during accumulation of evidence in unrestrained and voluntarily head-restrained rats

    Benjamin B Scott et al.
    Statistical analysis of evidence-based decisions reveals new insights into the source of behavioral variability.
    1. Neuroscience

    Distinct neural contributions to metacognition for detecting, but not discriminating visual stimuli

    Matan Mazor et al.
    Combining psychophysics and functional MRI reveals a qualitative asymmetry in neural engagement when reflecting on whether a stimulus is seen (detection) compared to reflecting on what a stimulus is (discrimination).
    1. Cancer Biology

    Use of signals of positive and negative selection to distinguish cancer genes and passenger genes

    László Bányai et al.
    In contrast with earlier conclusions, negative selection has a major role in cancer evolution.
    1. Neuroscience

    Decoupling sensory from decisional choice biases in perceptual decision making

    Daniel Linares et al.
    Perceptual decision making, even in simple scenarios, is affected by sensory and decisional choice biases.
    1. Physics of Living Systems

    Theory for the optimal detection of time-varying signals in cellular sensing systems

    Giulia Malaguti, Pieter Rein ten Wolde
    A theory is presented for the optimal design of cellular sensing systems that maximizes the sensing precision given resource constraints.
    1. Neuroscience

    Boosts in brain signal variability track liberal shifts in decision bias

    Niels A Kloosterman et al.
    Modulation of moment-to-moment irregularity of neural activity closely tracks our ability to flexibly adapt decision biases to the environment.
    1. Neuroscience

    Non-selective inhibition of inappropriate motor-tendencies during response-conflict by a fronto-subthalamic mechanism

    Jan R Wessel et al.
    Action-selection under response-conflict is buttressed by an inhibitory control signal from the basal ganglia that non-selectively suppresses motor excitability.
    1. Neuroscience

    Elementary sensory-motor transformations underlying olfactory navigation in walking fruit-flies

    Efrén Álvarez-Salvado et al.
    A high-throughput behavioral paradigm and computational modeling are used to decompose olfactory navigation in walking Drosophila melanogaster into a set of quantitative relationships between sensory input and motor output.
    1. Cell Biology
    2. Immunology and Inflammation

    Non-canonical antagonism of PI3K by the kinase Itpkb delays thymocyte β-selection and renders it Notch-dependent

    Luise Westernberg et al.
    Antagonistic signaling by the kinases PI3K and Itpkb limits the kinetics and enforces the Notch-dependence of beta-selection – the most important cell-fate determining process in alpha beta T cell development.

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