153 results found
    1. Neuroscience

    Distinct temporal difference error signals in dopamine axons in three regions of the striatum in a decision-making task

    Iku Tsutsui-Kimura et al.
    Dopamine signals in the ventral, dorsomedial, and dorsolateral striatum are modulated by various variables, such as stimulus-associated value, choice, confidence, but these modulations can be inclusively explained by TD errors.
    1. Neuroscience

    Midbrain dopamine neurons compute inferred and cached value prediction errors in a common framework

    Brian F Sadacca et al.
    Midbrain dopamine neurons in rats signal discrepancies between predicted and actual rewards, regardless of whether the rewards are predicted on the basis of experience or inference.
    1. Neuroscience

    Perception in autism does not adhere to Weber’s law

    Bat-Sheva Hadad, Sivan Schwartz
    Perception in autism is sensitive to absolute rather than to relative metrics of the environment, encoding changes in the environment without calibrating the changes relative to reference stimulation.
    1. Neuroscience

    The control of tonic pain by active relief learning

    Suyi Zhang et al.
    The brain has a central cortico-striatal learning circuit that suppresses ongoing pain after injury when actively learning about things that could remove the cause of the pain.
    1. Neuroscience

    One-shot learning and behavioral eligibility traces in sequential decision making

    Marco P Lehmann et al.
    Human learning relies on short-term memories (eligibility traces) which provide a mechanism to reinforce sequences of actions from a single reward (one-shot).
    1. Immunology and Inflammation

    IgM and IgD B cell receptors differentially respond to endogenous antigens and control B cell fate

    Mark Noviski et al.
    Self-reactive B cells downregulate the IgM but not the IgD B cell receptor, and this serves as a critical tolerance mechanism because IgD is less sensitive to bona fide endogenous antigens than IgM.
    1. Neuroscience

    Cerebellar climbing fibers encode expected reward size

    Noga Larry et al.
    Electrophysiological recordings in monkeys reveal that cerebellar complex spikes encode future reward size when reward information is first made available, but not during reward delivery or smooth pursuit eye movement.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Dual expression of Atoh1 and Ikzf2 promotes transformation of adult cochlear supporting cells into outer hair cells

    Suhong Sun et al.
    Adult cochlear supporting cells (SCs) are plastic and respond to ectopic Ikzf2 and Atoh1, and hair cell damage by up-regulating HC and down-regulating their endogenous SC genes.
    1. Neuroscience

    Reinforcement biases subsequent perceptual decisions when confidence is low, a widespread behavioral phenomenon

    Armin Lak et al.
    Confidence-dependent reinforcement learning is active and produces trial-to-trial choice updating even in well-learned perceptual decisions without explicit reward biases, across species and sensory modalities.
    1. Neuroscience

    Default mode-visual network hypoconnectivity in an autism subtype with pronounced social visual engagement difficulties

    Michael V Lombardo et al.
    Functional hypoconnectivity between ‘social brain’ default mode circuitry and visual association cortex underpins a subtype of autistic toddlers with a strong preference to attend to the non-social visual world.

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