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    1. Neuroscience

    Learning place cells, grid cells and invariances with excitatory and inhibitory plasticity

    Simon Nikolaus Weber, Henning Sprekeler
    A large variety of spatial representations implied in rodent navigation could arise robustly and rapidly from inputs with a weak spatial structure, by an interaction of excitatory and inhibitory synaptic plasticity.
    1. Neuroscience

    Visual landmarks sharpen grid cell metric and confer context specificity to neurons of the medial entorhinal cortex

    José Antonio Pérez-Escobar et al.
    The firing rate of MEC neurons conveys information about visual landmarks.
    1. Computational and Systems Biology
    2. Neuroscience

    Probable nature of higher-dimensional symmetries underlying mammalian grid-cell activity patterns

    Alexander Mathis et al.
    Mathematical analysis confirms that hexagonal patterns of neuronal activity are the most efficient means for the brain to represent 2D space, and predicts that activity patterns resembling densely packed lattices are optimal for representing 3D space.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The multi-subunit GID/CTLH E3 ubiquitin ligase promotes cell proliferation and targets the transcription factor Hbp1 for degradation

    Fabienne Lampert et al.
    Proteomic, biochemical and cell-based analyses of the heterodecameric core GID/CTLH E3 ligase complex reveal its molecular architecture, activity determinants, and function in targeting the tumor suppressor Hbp1 and other substrates required for cell proliferation.
    1. Neuroscience

    Navigation: Shedding light on stellate cells

    Andrew S Alexander, Michael E Hasselmo
    The relationship between grid cells and two types of neurons found in the medial entorhinal cortex has been clarified.
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    1. Neuroscience

    Functional properties of stellate cells in medial entorhinal cortex layer II

    David C Rowland et al.
    Stellate cells in the medial entorhinal cortex are functionally heterogeneous but a substantial fraction are grid cells.
    1. Neuroscience

    Spatial cell firing during virtual navigation of open arenas by head-restrained mice

    Guifen Chen et al.
    A mouse virtual reality system is presented which allows normal spatial behavior and place, grid and head-direction cell firing patterns in 2-D arenas, and is compatible with electrophysiology and multi-photon imaging.
    1. Neuroscience

    Visual cue-related activity of cells in the medial entorhinal cortex during navigation in virtual reality

    Amina A Kinkhabwala et al.
    Cue cells in the medial entorhinal cortex encode visual cues during virtual navigation, supporting the hypothesis that the brain represents visual cue information to error-correct grid cell firing during path-integration.
    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

    Entorhinal cortex receptive fields are modulated by spatial attention, even without movement

    Niklas Wilming et al.
    Moving covert attention can activate spatial representations in the Entorhinal cortex.