6,951 results found
    1. Medicine
    2. Neuroscience

    Family history of Alzheimer’s disease alters cognition and is modified by medical and genetic factors

    Joshua S Talboom et al.
    An internet-based cohort study of paired associate learning shows that a first-degree family history of dementia is associated with lowered performance, an effect modified by apolipoprotein E genotype and diabetes.
    1. Neuroscience

    Impaired adaptation of learning to contingency volatility in internalizing psychopathology

    Christopher Gagne et al.
    Hierarchical modeling of internalizing symptoms and task performance reveals that difficulty adapting probabilistic learning to second-order uncertainty is common to anxiety and depression and holds across rewarding and punishing outcomes.
    1. Neuroscience

    Paranoia as a deficit in non-social belief updating

    Erin J Reed et al.
    Paranoia is underwritten by variation in prior beliefs about how the world will change and how to learn from those changes.
    1. Neuroscience

    Dopamine neurons drive fear extinction learning by signaling the omission of expected aversive outcomes

    Ximena I Salinas-Hernández et al.
    Dopamine signaling is necessary for normal fear extinction learning.
    1. Neuroscience

    Complementary contributions of basolateral amygdala and orbitofrontal cortex to value learning under uncertainty

    Alexandra Stolyarova, Alicia Izquierdo
    Rat orbitofrontal cortex is required to accurately represent outcome distributions, whereas basolateral amygdala is necessary for the facilitation of learning in response to surprising events.
    1. Neuroscience

    Repeated social defeat stress enhances glutamatergic synaptic plasticity in the VTA and cocaine place conditioning

    Claire E Stelly et al.
    Enhanced glutamatergic synaptic plasticity in mesolimbic dopaminergic neurons may contribute to repeatedly stressed rats becoming more vulnerable to addiction.
    1. Neuroscience

    Impaired voice processing in reward and salience circuits predicts social communication in children with autism

    Daniel Arthur Abrams et al.
    Children with autism often 'tune out' the voices in their environment and new results show that impaired processing of voices in the brain's reward system may underlie this social behavior.
    1. Neuroscience

    Distinct responses of Purkinje neurons and roles of simple spikes during associative motor learning in larval zebrafish

    Thomas C Harmon et al.
    Discrete classes of cerebellar Purkinje neurons show distinct changes in synaptic and spiking activity during motor learning, with simple spikes playing a shifting role during acquisition, expression, and maintenance of learned responses.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Frequent exchange of the DNA polymerase during bacterial chromosome replication

    Thomas R Beattie et al.
    DnaB Helicase is the only stable component of the bacterial replisome as the replicative DNA polymerase frequently exchanges in both leading and lagging strands.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Atomic structures of fibrillar segments of hIAPP suggest tightly mated β-sheets are important for cytotoxicity

    Pascal Krotee et al.
    Atomic structures of hIAPP fibrillar segments, determined using the cryo electron microscopy method MicroED, reveal that strong, stable intermolecular interactions are important features of cytotoxic amyloid proteins.

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