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    1. Computational and Systems Biology
    2. Neuroscience

    Dopamine role in learning and action inference

    Rafal Bogacz
    A mathematical model describes the function of dopaminergic neurons in both learning and action planning.
    1. Neuroscience

    Inhibition of noradrenergic signalling in rodent orbitofrontal cortex impairs the updating of goal-directed actions

    Juan Carlos Cerpa, Alessandro Piccin ... Etienne Coutureau
    Silencing noradrenergic projections from the locus coeruleus to the ventral and lateral regions of the orbitofrontal cortex prevents the updating of previously established goal-directed actions.
    1. Neuroscience

    Canonical goal-selective representations are absent from prefrontal cortex in a spatial working memory task requiring behavioral flexibility

    Claudia Böhm, Albert K Lee
    Representation of goals in the forms previously reported in the PFC is not required for performance of a novel spatial working memory task where goal information must be used flexibly.
    1. Neuroscience

    Basal ganglia output reflects internally-specified movements

    Mario J Lintz, Gidon Felsen
    The basal ganglia may preferentially influence movements based on internal goals rather than those guided by external stimuli.
    1. Neuroscience

    Wireless recording from unrestrained monkeys reveals motor goal encoding beyond immediate reach in frontoparietal cortex

    Michael Berger, Naubahar Shahryar Agha, Alexander Gail
    The novel Reach Cage allows neurophysiology studies of structured behavior with unrestrained Rhesus macaques showing that the frontoparietal reach network is selective for reach goals outside the immediately reachable space.
    1. Neuroscience

    Effects of dopamine D2/3 and opioid receptor antagonism on the trade-off between model-based and model-free behaviour in healthy volunteers

    Nace Mikus, Sebastian Korb ... Christoph Mathys
    Blocking D2 dopamine receptors increases goal-directed (“model-based”) control when alternative habitual ("model-free") actions are available, whereas blocking opioid receptors does not seem to have an effect on the arbitration between the two modes of acting.
    1. Neuroscience

    Mesolimbic dopamine projections mediate cue-motivated reward seeking but not reward retrieval in rats

    Briac Halbout, Andrew T Marshall ... Sean B Ostlund
    Inhibiting ventral tegmental dopamine neurons, or their inputs to nucleus accumbens, disrupts cue-motivated reward seeking in a manner that depends on the microstructure of behavior.
    1. Neuroscience

    Neural activity ramps in frontal cortex signal extended motivation during learning

    Josue M Regalado, Ariadna Corredera Asensio ... Priyamvada Rajasethupathy
    Motivated animals learn to put in more effort and ignore distractions to reach their goals due to increased neural activity in the frontal cortex.
    1. Neuroscience

    Learning speed and detection sensitivity controlled by distinct cortico-fugal neurons in visual cortex

    Sarah Ruediger, Massimo Scanziani
    Neural pathways from mammalian visual cortex to ancestral brain structures control learning speed and performance of a simple detection task.
    1. Neuroscience

    Disruption of Nrxn1α within excitatory forebrain circuits drives value-based dysfunction

    Opeyemi O Alabi, M Felicia Davatolhagh ... Marc Vincent Fuccillo
    Disruption of the disease-associated synaptic adhesion molecule Neurexin1a in cortical excitatory neurons perturbs decision making and disrupts value-associated neural activity in downstream striatal circuits.