58 results found
    1. Neuroscience

    Hippocampal and cortical mechanisms at retrieval explain variability in episodic remembering in older adults

    Alexandra N Trelle et al.
    The strength of pattern completion during memory retrieval, indexed by hippocampal activity and cortical reinstatement, explains within- and across-individual variability in episodic memory in older adults.
    1. Neuroscience

    Reinstatement of long-term memory following erasure of its behavioral and synaptic expression in Aplysia

    Shanping Chen et al.
    Storage of long-term memory in Aplysia does not require stable synapses.
    1. Neuroscience

    Prefrontal dopamine regulates fear reinstatement through the downregulation of extinction circuits

    Natsuko Hitora-Imamura et al.
    Prefrontal dopamine regulates inhibition of fear extinction circuits in the infralimbic cortex and disinhibition of fear expression circuits in the amygdala, leading to fear reinstatement.
    1. Neuroscience

    A causal role for the precuneus in network-wide theta and gamma oscillatory activity during complex memory retrieval

    Melissa Hebscher et al.
    Inhibitory noninvasive stimulation to the precuneus disrupts theta and gamma oscillatory coupling between medial temporal lobes and neocortical regions during complex personal memory retrieval.
    1. Neuroscience

    Constitutive activation of kappa opioid receptors at ventral tegmental area inhibitory synapses following acute stress

    Abigail M Polter et al.
    Rats exposed to a single stressful event experience days-long constitutive activation of the kappa opioid receptor at inhibitory synapses in part of the brain’s reward system, which increases their drug-seeking behavior.
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    Aberrant corticosteroid metabolism in tumor cells enables GR takeover in enzalutamide resistant prostate cancer

    Jianneng Li et al.
    Prostate cancer resistance to androgen receptor antagonist therapy occurs by way of tumors impeding local glucocorticoid metabolism and inactivation and thereby permitting sustained glucocorticoids to stimulate up-regulated glucocorticoid receptor.
    1. Cell Biology

    Akt1-Inhibitor of DNA binding2 is essential for growth cone formation and axon growth and promotes central nervous system axon regeneration

    Hyo Rim Ko et al.
    Akt mediated S14 phosphorylation of Id2 augments its protein stability and growth cone localization, promoting growth cone formation and axon growth in the developing neuron and contributing to axon regeneration in the damaged hippocampus slice.
    1. Neuroscience

    Retrieval practice facilitates memory updating by enhancing and differentiating medial prefrontal cortex representations

    Zhifang Ye et al.
    Retrieval practice strongly engages the medial prefrontal cortex to integrate and differentiate memory representations, resulting in more effective memory updating.
    1. Neuroscience

    Hippocampal pattern completion is linked to gamma power increases and alpha power decreases during recollection

    Bernhard P Staresina et al.
    Direct recordings from the human hippocampus reveal the neural mechanisms that orchestrate recollection of past experiences.
    1. Neuroscience

    Development of schemas revealed by prior experience and NMDA receptor knock-out

    George Dragoi, Susumu Tonegawa
    Novel spatial representations by hippocampal cellular assemblies develop on the framework of preconfigured hippocampal networks whose homeostatic synaptic reorganization is accelerated by prior experience and CA3 NMDAR-dependent plasticity.

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