2,822 results found
    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

    Distinct neuronal populations contribute to trace conditioning and extinction learning in the hippocampal CA1

    Rebecca A Mount et al.
    Large-scale imaging analysis of CA1 reveals that distinct neural networks are involved in trace conditioning versus extinction learning, shedding light on how the hippocampus encodes different types of memory.
    1. Neuroscience

    L-DOPA modulates activity in the vmPFC, nucleus accumbens, and VTA during threat extinction learning in humans

    Roland Esser et al.
    Encoding an expected, but absent, threat is modulated by dopaminergic neurotransmission that regulates success of extinction learning in humans.
    1. Neuroscience

    Sexually divergent expression of active and passive conditioned fear responses in rats

    Tina M Gruene et al.
    Female, but not male rats exhibit an active conditioned fear response, which challenges traditional approaches to measuring fear learning exclusively through freezing, and suggests that females use a more diverse set of threat strategies.
    1. Ecology

    Relative demographic susceptibility does not explain the extinction chronology of Sahul’s megafauna

    Corey JA Bradshaw et al.
    There is no relationship between the demographic susceptibility to extinction and the estimated extinction chronology among Sahul’s megafauna, suggesting that human choices, a species’ ecological requirements, and/or random climate variation instead determined the extinction chronology.
    1. Neuroscience

    Isoform-specific roles for AKT in affective behavior, spatial memory, and extinction related to psychiatric disorders

    Helen Wong et al.
    Murine behavioral testing and biochemical experiments reveal AKT isoform- and sex-dependent mechanisms regulating affective behavior, memory formation, and extinction.
    1. Neuroscience

    Different methods of fear reduction are supported by distinct cortical substrates

    Belinda PP Lay et al.
    Extinction and overexpectation lead to the same behavioural outcome, that is, reduction in learned fear, but engage different cortical areas.
    1. Neuroscience

    Amygdala-ventral striatum circuit activation decreases long-term fear

    Susana S Correia et al.
    Behavior- or optogenetic-driven activation of a basolateral amygdala projection to the nucleus accumbens enhances infralimbic cortex activity and long-term fear extinction.
    1. Neuroscience

    Midbrain dopaminergic inputs gate amygdala intercalated cell clusters by distinct and cooperative mechanisms in male mice

    Ayla Aksoy-Aksel et al.
    Dopaminergic input shapes activity of specialized amygdala inhibitory cell clusters by ionotropic and metabotropic mechanisms that may enable their selection during distinct fear-related behavioral states.
    1. Neuroscience

    IGF-1 facilitates extinction of conditioned fear

    Laura E Maglio et al.
    Insulin-like growth factor-1 activates the prefrontal cortex and improves the extinction of aversive memories.

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