21 results found
    1. Neuroscience

    Shared rhythmic subcortical GABAergic input to the entorhinal cortex and presubiculum

    Tim James Viney et al.
    GABAergic parvalbumin-expressing 'orchid cells' of the medial septum selectively target GABAergic neurons in connected extra-hippocampal areas of the mouse, providing rhythmically bursting inhibitory input at the peak of hippocampal 5-12 Hz theta oscillatory cycles.
    1. Neuroscience

    Postnatal development of retrosplenial projections to the parahippocampal region of the rat

    Jørgen Sugar, Menno P Witter
    Retrosplenial axons arriving in the parahippocampal region around the first day after birth are topographically organized, similarly to what has been reported in the adult.
    1. Neuroscience

    Structural development and dorsoventral maturation of the medial entorhinal cortex

    Saikat Ray, Michael Brecht
    The medial entorhinal cortex is important for spatial memory formation and matures from dorsal, where smaller spatial-scales are represented, to ventral, where larger spatial-scales are represented.
    1. Neuroscience

    Extracting grid cell characteristics from place cell inputs using non-negative principal component analysis

    Yedidyah Dordek et al.
    Computational modeling of the brain’s navigation system reveals that place cells can drive the formation of hexagonal patterns experimentally observed in grid cells activity.
    1. Neuroscience

    Framing of grid cells within and beyond navigation boundaries

    Francesco Savelli et al.
    Grid-cell maps can be aligned to both local and remote reference frames, suggesting that they provide a metric for space beyond the navigationally accessible boundaries of the local environment.
    1. Neuroscience

    Functional subregions of the human entorhinal cortex

    Anne Maass et al.
    By employing high-field fMRI to measure connectivity with the hippocampus and adjacent parahippocampal structures within the medial temporal lobe, it is shown that the entorhinal cortex can be divided into anterior-lateral and posterior-medial subregions.
    1. Neuroscience
    2. Physics of Living Systems

    A geometric attractor mechanism for self-organization of entorhinal grid modules

    Louis Kang, Vijay Balasubramanian
    The hierarchy of entorhinal grid cell modules with constant scale ratios can self-organize through a new geometrically organized attractor mechanism.
    1. Neuroscience

    A central role for the retrosplenial cortex in de novo environmental learning

    Stephen D Auger et al.
    Functional brain imaging of subjects while travelling through an alien virtual world reveals how brain regions encode novel environments from scratch thus enabling navigation.
    1. Neuroscience

    Ultra-high-field imaging reveals increased whole brain connectivity underpins cognitive strategies that attenuate pain

    Enrico Schulz et al.
    A single-trial whole-brain analysis of three cognitive strategies to attenuate pain shows that a more effective pain attenuation is associated with increased functional connectivity across the entire brain.
    1. Neuroscience

    Non-rhythmic head-direction cells in the parahippocampal region are not constrained by attractor network dynamics

    Olga Kornienko et al.
    Head-direction cells in the parahippocampal region can be divided into two functionally distinct classes that are differentially constrained by attractor network dynamics.

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