2,869 results found
    1. Neuroscience

    Output variability across animals and levels in a motor system

    Angela Wenning et al.
    Population output variability in a motor control system varies across levels (CPG, motor neurons, muscles) and can be ascribed to life history differences among animals and in some cases to differences between bilaterally homologous elements.
    1. Neuroscience

    A neural circuit mechanism for regulating vocal variability during song learning in zebra finches

    Jonathan Garst-Orozco et al.
    By demonstrating song learning-related synaptic strengthening and pruning in the vocal control circuits of songbirds, and showing how such changes can reduce the sensitivity of the circuit to ‘noisy’ inputs, a simple neural circuit mechanism for regulating motor variability during motor skill learning is identified.
    1. Neuroscience

    Motor Systems: Variability in neural networks

    Daniel R Kick, David J Schulz
    Experiments on neurons in the heart system of the leech reveal why rhythmic behaviors differ between individuals.
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    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    The mechanism of variability in transcription start site selection

    Libing Yu et al.
    Variability in bacterial transcription start site selection involves DNA “scrunching” and “anti-scrunching,” which may represent a general mechanism for start site selection in all organisms.
    1. Ecology
    2. Evolutionary Biology

    Emergence of trait variability through the lens of nitrogen assimilation in Prochlorococcus

    Paul M Berube et al.
    In the context of an organism's ecology, physiology, and macroevolutionary history, inheritance and gene loss can yield emergent patterns of trait variability that give the appearance of gene acquisition.
    1. Neuroscience

    Corticostriatal dynamics encode the refinement of specific behavioral variability during skill learning

    Fernando J Santos et al.
    Recordings from the mouse brain as animals learn a lever pressing task reveal how the motor system optimizes skill learning by reducing variability in those aspects of task performance that are essential for achieving a goal.
    1. Neuroscience

    Neuronal variability and tuning are balanced to optimize naturalistic self-motion coding in primate vestibular pathways

    Diana E Mitchell et al.
    A match between neuronal variability and tuning enables optimized coding of natural self-motion in early vestibular pathways.
    1. Neuroscience

    Network-wide abnormalities explain memory variability in hippocampal amnesia

    Georgios PD Argyropoulos et al.
    Hippocampal damage is associated with changes across the extended hippocampal system, and these may explain variability in memory between patients presenting with hippocampal amnesia.
    1. Biochemistry and Chemical Biology
    2. Human Biology and Medicine

    Variability of cholesterol accessibility in human red blood cells measured using a bacterial cholesterol-binding toxin

    Rima S Chakrabarti et al.
    Accessible cholesterol levels in human red blood cells were found to be stable within individuals but vary >10-fold among individuals and this variability may contribute to differences in cholesterol trafficking among tissues.
    1. Neuroscience

    Hidden synaptic differences in a neural circuit underlie differential behavioral susceptibility to a neural injury

    Akira Sakurai et al.
    Animal-to-animal variability in neural circuit elements is often hidden under normal conditions, but becomes functionally relevant when the system is challenged by injury.

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