4,224 results found
    1. Neuroscience

    Canonical goal-selective representations are absent from prefrontal cortex in a spatial working memory task requiring behavioral flexibility

    Claudia Böhm, Albert K Lee
    Representation of goals in the forms previously reported in the PFC is not required for performance of a novel spatial working memory task where goal information must be used flexibly.
    1. Neuroscience

    Conditioning sharpens the spatial representation of rewarded stimuli in mouse primary visual cortex

    Pieter M Goltstein et al.
    Stimulus-reward learning sharpens the local representation of the visual space while leaving the overall retinotopic map intact.
    1. Neuroscience

    Differences in reward biased spatial representations in the lateral septum and hippocampus

    Hannah S Wirtshafter, Matthew A Wilson
    Reward-related spatial information is preferentially represented in the lateral septum compared to the hippocampus and may be used downstream to direct the animal to rewarded locations.
    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. Neuroscience

    A spatial memory signal shows that the parietal cortex has access to a craniotopic representation of space

    Mulugeta Semework et al.
    Neural recordings and analyses illustrate a unique lateral intraparietal area (LIP) response that may contribute to how primates can establish a memory of the environment in a useful coordinate frame, and maintain this representation of the environment over time.
    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.
    1. Neuroscience

    Grid-cell representations in mental simulation

    Jacob LS Bellmund et al.
    Functional magnetic resonance imaging performed while people imagined directions from stationary viewpoints supports theories suggesting that spatially tuned cells such as grid cells underlie mental simulation for future thinking.
    1. Neuroscience

    Neural mechanisms underlying expectation-dependent inhibition of distracting information

    Dirk van Moorselaar et al.
    Learned expectations allow for a distinct anticipatory distractor representation at the feature but not at the spatial level.
    1. Neuroscience

    Mapping quantal touch using 7 Tesla functional magnetic resonance imaging and single-unit intraneural microstimulation

    Rosa Maria Sanchez Panchuelo et al.
    The combination of intraneural microstimulation and 7T fMRI makes it possible to bridge the gap between first-order mechanoreceptive afferent input codes and their spatial, dynamic and perceptual representations in human cortex.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Nuclei determine the spatial origin of mitotic waves

    Felix E Nolet et al.
    Nuclei and spatial system dimensions control local concentrations of cell cycle regulators, determining the spatial origin of waves that coordinate​ DNA replication and, subsequently, cell division.

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