3,572 results found
    1. Neuroscience

    Dendritic coincidence detection in Purkinje neurons of awake mice

    Christopher J Roome, Bernd Kuhn
    Simultaneous voltage and calcium two-photon imaging of Purkinje neuron dendrites in awake mice reveals multiple interplaying mechanisms underlying sensory-evoked dendritic coincidence detection of parallel fiber and climbing fiber input.
    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. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Coincidence detection and bi-directional transmembrane signaling control a bacterial second messenger receptor

    Richard B Cooley et al.
    Building on previous work (Chatterjee et al., 2014), the mechanism of coincidence detection in bacterial second messenger signaling across membranes is revealed at a molecular level, providing insight into the regulation of a conserved transmembrane receptor.
    1. Neuroscience

    Focal optogenetic suppression in macaque area MT biases direction discrimination and decision confidence, but only transiently

    Christopher R Fetsch et al.
    Perceptual decision making in monkeys can be manipulated by using optogenetics to inactivate functional subregions of visual cortex, but the brain has a capacity to compensate for this perturbation.
    1. Neuroscience

    Neural evidence accumulation persists after choice to inform metacognitive judgments

    Peter R Murphy et al.
    Error detection is contingent on the continuation of evidence accumulation after choice commitment, and the speed and accuracy of this process are modulated by high-level signals from medial frontal cortex.
    1. Neuroscience

    Human VMPFC encodes early signatures of confidence in perceptual decisions

    Sabina Gherman, Marios G. Philiastides
    Simultaneous EEG-fMRI reveals neural representations of decision confidence unfolding prior to explicit perceptual choices, in a region of the ventromedial prefrontal cortex typically linked to reward processing and value-based decisions.
    1. Neuroscience

    The influence of evidence volatility on choice, reaction time and confidence in a perceptual decision

    Ariel Zylberberg et al.
    A single framework of bounded evidence accumulation resolves the seemingly paradoxical effects of noise on accuracy, reaction time and confidence.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Functional genomics of lipid metabolism in the oleaginous yeast Rhodosporidium toruloides

    Samuel T Coradetti et al.
    Using barcoded mutagenesis and a high-throughput genetic screen results in the identification of 150 genes that affect lipid accumulation in a non-model yeast system.
    1. Neuroscience

    Human observers have optimal introspective access to perceptual processes even for visually masked stimuli

    Megan A K Peters, Hakwan Lau
    Despite the widely held belief among researchers in consciousness that healthy observers can show unconscious perception, a study using a novel method to control for response biases finds no evidence for this phenomenon.
    1. Epidemiology and Global Health
    2. Evolutionary Biology

    A transmission-virulence evolutionary trade-off explains attenuation of HIV-1 in Uganda

    François Blanquart et al.
    Analysis of epidemiological data reveals that viral loads in newly HIV-1 infected individuals in Uganda have declined for two decades, and evolutionary modelling shows that attenuation of the virus explains this decline.

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