311 results found
    1. Neuroscience

    More homogeneous capillary flow and oxygenation in deeper cortical layers correlate with increased oxygen extraction

    Baoqiang Li et al.
    Resting-state capillary blood flow and oxygenation are more homogeneous in the deeper cortical layers, underpinning an important mechanism by which the microvascular network adapts to an increased local oxidative metabolism.
    1. Neuroscience

    Brain Evolution: Adaptations to extreme conditions

    Barbara S Beltz
    The brain architecture of shrimp living in deep-sea vents provides clues to how these organisms have adapted to extreme living.
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    1. Ecology

    The Natural History of Model Organisms: Peromyscus mice as a model for studying natural variation

    Nicole L Bedford, Hopi E Hoekstra
    The deer mouse (Peromyscus) has emerged as a model system for studying many aspects of biology, supported by extensive historical knowledge of its fascinating and varied natural history.
    1. Biochemistry and Chemical Biology

    Enzyme Mechanisms: Wedging open a catalytic site

    Annie Beuve
    The activation mechanism of the nitric oxide receptor has been revealed by cryo-electron microscopy.
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    1. Ecology
    2. Evolutionary Biology

    Physiology: The highs and lows of bird flight

    Jon Harrison
    Bar-headed geese lower their flight metabolic rates to fly in low-oxygen conditions.
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    1. Neuroscience

    A connectional hub in the rostral anterior cingulate cortex links areas of emotion and cognitive control

    Wei Tang et al.
    A hub in the rostral anterior cingulate cortex receives unusually high and functionally diverse inputs, providing a biological interface between motivation, incentive based learning, and decision making.
    1. Neuroscience

    Anatomical basis and physiological role of cerebrospinal fluid transport through the murine cribriform plate

    Jordan N Norwood et al.
    Chemical ablation of olfactory sensory neurons blocks cerebrospinal fluid outflow into the nasal epithelium, leading to alterations of cerebrospinal fluid dynamics.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Cretaceous dinosaur bone contains recent organic material and provides an environment conducive to microbial communities

    Evan T Saitta et al.
    Subterranean fossil bone hosts a living microbiome different from the surrounding sediment without evidence of original protein preservation.
    1. Neuroscience

    Ventrolateral periaqueductal gray neurons prioritize threat probability over fear output

    Kristina M Wright, Michael A McDannald
    Single-unit activity in the ventrolateral periaqueductal gray, a brain region implicated in organizing fear output, is found to reflect threat probability, a more versatile threat signal.
    1. Evolutionary Biology

    Changes to social feeding behaviors are not sufficient for fitness gains of the Caenorhabditis elegans N2 reference strain

    Yuehui Zhao et al.
    Use of experimental manipulation demonstrates that social/solitary feeding behaviors are unrelated to the fitness gains conferred by causative alleles in two previously identified genes.

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