53 results found
    1. Neuroscience

    Learning: Hippocampal neurons wait their turn

    Yuan Gao, Ian Davison
    Version of Record
    Insight
    1. Neuroscience

    CA1 cell activity sequences emerge after reorganization of network correlation structure during associative learning

    Mehrab N Modi, Ashesh K Dhawale, Upinder S Bhalla
    As mice learn to associate events separated in time, neurons within the CA1 region of the hippocampus progressively reorganize their firing patterns, leading to a relay of cellular activity that bridges the two events.
    1. Neuroscience

    Coding of stimulus strength via analog calcium signals in Purkinje cell dendrites of awake mice

    Farzaneh Najafi, Andrea Giovannucci ... Javier F Medina
    Sensory-driven calcium spikes in Purkinje cells are not binary; instead, they are graded and can provide information about the strength of a periocular airpuff stimulus known to drive learning.
    1. Neuroscience

    Cerebellar associative sensory learning defects in five mouse autism models

    Alexander D Kloth, Aleksandra Badura ... Samuel S-H Wang
    Five mouse models of autism show deficits in delay eyeblink conditioning, a form of split-second sensory learning that involves the cerebellum, a frequent site of disruption in autistic brains.
    1. Neuroscience

    Spatial tuning and brain state account for dorsal hippocampal CA1 activity in a non-spatial learning task

    Kevin Q Shan, Evgueniy V Lubenov ... Athanassios G Siapas
    Recordings in freely-moving rats show that hippocampal dorsal CA1 pyramidal cells signal only spatial information, even in a non-spatial task such as trace eyeblink conditioning.
    1. Neuroscience

    Generalizable knowledge outweighs incidental details in prefrontal ensemble code over time

    Mark D Morrissey, Nathan Insel, Kaori Takehara-Nishiuchi
    Neuron ensembles in the medial prefrontal cortex gradually develop codes for relevant, latent variables common across multiple experiences while – apparently independently – losing information about irrelevant, contextual variables unique to each experience.
    1. Neuroscience

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

    Thomas C Harmon, Uri Magaram ... Indira M Raman
    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. Neuroscience

    Threat of shock increases excitability and connectivity of the intraparietal sulcus

    Nicholas L Balderston, Elizabeth Hale ... Christian Grillon
    Multimodal neuroimaging was used to study the effect of threat on spontaneous brain activity and functional connectivity, and demonstrated that threat increases both activity and connectivity of the intraparietal sulcus, a key node in the frontoparietal attention network.
    1. Neuroscience

    MeCP2 regulates Tet1-catalyzed demethylation, CTCF binding, and learning-dependent alternative splicing of the BDNF gene in Turtle

    Zhaoqing Zheng, Ganesh Ambigapathy, Joyce Keifer
    Loss of MeCP2 function negatively impacts Tet1 and CTCF binding thereby negatively impacting learning-dependent DNA methylation and alternative splicing regulation.
    1. Neuroscience

    Phasic and tonic neuron ensemble codes for stimulus-environment conjunctions in the lateral entorhinal cortex

    Maryna Pilkiw, Nathan Insel ... Kaori Takehara-Nishiuchi
    Neuron populations in the lateral entorhinal cortex discriminate between memory-based contexts through both continuous "tonic" activity patterns as well as by their stimulus-evoked "phasic" responses.

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