297 results found
    1. Neuroscience

    Sex Differences: To freeze or not to freeze

    Debra Bangasser
    Insight
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    1. Neuroscience

    Bed nucleus of the stria terminalis regulates fear to unpredictable threat signals

    Travis D Goode et al.
    The bed nucleus of the stria terminalis (BNST) is required for the expression of defensive behavior to uncertain threats, a function that is central to pathological anxiety.
    1. Neuroscience

    A virtual burrow assay for head–fixed mice measures habituation, discrimination, exploration and avoidance without training

    Andrew JP Fink et al.
    A naturalistic assay for head-fixed mice permits observation of a diverse set of innate and learned behaviors without requiring any training.
    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

    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

    Extinction recall of fear memories formed before stress is not affected despite higher theta activity in the amygdala

    Mohammed Mostafizur Rahman et al.
    When the fear-enhancing effects of prior exposure to stress are absent, the expression of fear reflects normal neural activity in the medial prefrontal cortex, not stress-induced hyperactivity in the amygdala.
    1. Neuroscience

    Glucocorticoid receptor-mediated amygdalar metaplasticity underlies adaptive modulation of fear memory by stress

    Ran Inoue et al.
    Behavioral analyses and an optogenetic approach reveal an existence of GR-mediated metaplasticity in the LA and its link with adaptive fear response to auditory cues in a stressful condition.
    1. Neuroscience

    Activation of the same mGluR5 receptors in the amygdala causes divergent effects on specific versus indiscriminate fear

    Mohammed Mostafizur Rahman et al.
    Activation of the same glutamate receptor in the lateral amygdala gives rise to distinct effects on specific versus indiscriminate fear by modulating intrinsic excitability and synaptic plasticity.
    1. Neuroscience

    Instructed knowledge shapes feedback-driven aversive learning in striatum and orbitofrontal cortex, but not the amygdala

    Lauren Y Atlas et al.
    While the striatum and orbitofrontal cortex learn about threats through verbal warnings, the amygdala learns only from direct experience, suggesting that the amygdala forms part of a specialized threat detection system.
    1. Neuroscience

    Different types of theta rhythmicity are induced by social and fearful stimuli in a network associated with social memory

    Alex Tendler, Shlomo Wagner
    Variations in the frequency of theta brain waves enable a single network of brain regions to generate appropriate responses to stimuli with different kinds of emotional value.

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