1,552 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

    High-fidelity musculoskeletal modeling reveals that motor planning variability contributes to the speed-accuracy tradeoff

    Mazen Al Borno et al.
    The speed-accuracy tradeoff could be a consequence of motor planning variability and not exclusively signal-dependent noise, as is currently held.
    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

    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.
    1. Neuroscience

    Motor selection dynamics in FEF explain the reaction time variance of saccades to single targets

    Christopher K Hauser et al.
    Oculomotor circuits are always busy planning the next eye movement, and this explains why, when a visual target appears, some eye movements toward it are produced very quickly whereas others take a long time to prepare.
    1. Neuroscience

    Behavioural and neural signatures of perceptual decision-making are modulated by pupil-linked arousal

    Jochem van Kempen et al.
    A direct relationship between pupil diameter and electrophysiological correlates of attention, sensory stimulus processing and target detection was observed demonstrating that arousal has a substantial influence on perceptual decision-making.
    1. Neuroscience

    Instantaneous movement-unrelated midbrain activity modifies ongoing eye movements

    Antimo Buonocore et al.
    Sensory activity within the superior colliculus is read out by downstream motor structures and contributes to individual saccade kinematics with single spike precision.
    1. Neuroscience

    Acetylcholine acts on songbird premotor circuitry to invigorate vocal output

    Paul I Jaffe, Michael S Brainard
    The neuromodulator acetylcholine contributes to state-dependent modulation of motor vigor and variability by direct action on songbird premotor cortex, bypassing basal ganglia circuitry.
    1. Neuroscience

    Neural activity in cortico-basal ganglia circuits of juvenile songbirds encodes performance during goal-directed learning

    Jennifer M Achiro et al.
    Activity in cortico-basal ganglia circuits of juvenile songbirds reflects evaluative signals necessary for comparing self-generated behavior to a goal representation during skill learning.

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