7,422 results found
    1. Neuroscience

    Ventrolateral periaqueductal gray neurons prioritize threat probability over fear output

    Kristina M Wright, Michael A McDannald
    Single-unit activity in the ventrolateral periaqueductal gray, a brain region implicated in organizing fear output, is found to reflect threat probability, a more versatile threat signal.
    1. Neuroscience

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

    Ximena I Salinas-Hern√°ndez 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

    Hippocampal neurogenesis enhancers promote forgetting of remote fear memory after hippocampal reactivation by retrieval

    Rie Ishikawa et al.
    Forgetting of remote fear memory is promoted by increased hippocampal neurogenesis only after hippocampal reactivation by long time memory retrieval.
    1. Neuroscience

    Modulation of anxiety and fear via distinct intrahippocampal circuits

    Elif Engin et al.
    The hippocampus features a double dissociation in its circuits with respect to the regulation of fear and anxiety, with CA3 and the dentate gyrus implicated in anxiety and CA1 in fear.
    1. Neuroscience

    Enhancement of fear memory by retrieval through reconsolidation

    Hotaka Fukushima et al.
    Retrieval enhances fear memory through reconsolidation by activating calcineurin-induced protein degradation and CREB-mediated gene expression in amygdala, hippocampus, and mPFC.
    1. Neuroscience

    Early life adversity decreases pre-adolescent fear expression by accelerating amygdala PV cell development

    Gabriela Manzano Nieves et al.
    Early life adversity (ELA) accelerated PV+ interneuron development in BLA and delayed the ability of pre-adolescent mice to express, but not form, an auditory conditioned fear memory in childhood.
    1. Neuroscience

    Distinct signals in medial and lateral VTA dopamine neurons modulate fear extinction at different times

    Lili X Cai et al.
    Dopamine neurons in medial versus lateral VTA encode different signals during fear extinction, yet inhibition of both populations influences fear extinction, at different times.
    1. Developmental Biology

    Shaping of inner ear sensory organs through antagonistic interactions between Notch signalling and Lmx1a

    Zoe F Mann et al.
    A dynamic confrontation between Notch signalling and the transcription factor Lmx1a at the borders of the developing inner ear sensory patches regulates their segregation and the positioning of their boundaries.
    1. Cell Biology
    2. Developmental Biology

    Lamellar projections in the endolymphatic sac act as a relief valve to regulate inner ear pressure

    Ian A Swinburne et al.
    The pressure of fluid in the inner ear is controlled by opening of cellular valves in the endolymphatic sac to allow for regulated transepithelial fluid flow.

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