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Showing 1–16 of 16 results
Advanced filters: Author: James J. Knierim Clear advanced filters

  • How directional information is integrated into classic place coding and landmark vector coding within the hippocampus remain not fully understood. Here authors show that, both place cells and landmark vector cells (LVCs) receive identical directional inputs, yet the firing fields of place cells and LVCs rotated by similar degrees relative to the center of the environment and relative to the nearby landmark, respectively.

    • Yue-Qing Zhou
    • Vyash Puliyadi
    • James J. Knierim
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-15

  • How lateral entorhinal cortex (LEC) neurons integrate both spatial and temporal information are not fully understood. Here authors showed that LEC neurons could change their firing rate at specific locations to signal temporal information, which provides a way to combine spatial and temporal information in the hippocampal episodic memory system.

    • Cheng Wang
    • Heekyung Lee
    • James J. Knierim
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-14

  • How the brain adjusts the neural integration gain to keep its neural codes for continuous variables accurate is unknown. Using bump attractor networks, the authors derive the principles of this gain adjustment and identify two biologically plausible, error-driven mechanisms.

    • Gorkem Secer
    • James J. Knierim
    • Noah J. Cowan
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-18

  • Using a closed-loop virtual reality system, the authors show that optic flow cues can causally drive and recalibrate the hippocampal place cell system in the absence of an absolute spatial reference frame defined by external landmarks.

    • Manu S. Madhav
    • Ravikrishnan P. Jayakumar
    • Noah J. Cowan
    Research
    Nature Neuroscience
    Volume: 27, P: 1599-1608

  • Distinct processing of objects and space has been an organizing principle for studying higher-level vision and medial temporal lobe memory. Here Connor and Knierim discuss instead how spatial information, on both local and global scales, is deeply integrated into the ventral-temporal object-processing pathway in vision and memory.

    • Charles E Connor
    • James J Knierim
    Reviews
    Nature Neuroscience
    Volume: 20, P: 1493-1503

  • An artificial-intelligence technique called deep learning has now been used to model spatial navigation. The system develops a representation of space similar to that of the grid cells found in the mammalian brain.

    • Francesco Savelli
    • James J. Knierim
    News & Views
    Nature
    Volume: 557, P: 313-314

  • Temporal information that is useful for episodic memory is encoded across a wide range of timescales in the lateral entorhinal cortex, arising inherently from its representation of ongoing experience.

    • Albert Tsao
    • Jørgen Sugar
    • Edvard I. Moser
    Research
    Nature
    Volume: 561, P: 57-62

  • Evidence from hippocampal place cells shows that path-integration gain, previously thought to be a constant factor in the computation of location, is flexible and can be rapidly fine-tuned.

    • Ravikrishnan P. Jayakumar
    • Manu S. Madhav
    • James J. Knierim
    Research
    Nature
    Volume: 566, P: 533-537

  • How does the brain represent space as a terrestrial animal moves in three dimensions? A study suggests that the vertical dimension is encoded with less precision than the horizontal plane.

    • Francesco Savelli
    • James J Knierim
    News & Views
    Nature Neuroscience
    Volume: 14, P: 1102-1103

  • Here the authors find that increased place cell activity during exploratory head-scanning behaviors predicted the formation and potentiation of place fields on the next pass through that location, regardless of environmental familiarity and across multiple days. This place cell activity is a strong candidate mechanism to mediate the one-trial encoding of ongoing experiences necessary for memory.

    • Joseph D Monaco
    • Geeta Rao
    • James J Knierim
    Research
    Nature Neuroscience
    Volume: 17, P: 725-731

  • Various theories exist for the function of the dentate gyrus in learning and memory. In this Perspective article, Rangel and colleagues compare a number of these theories and discuss how they may be further tested to develop a better understanding of dentate gyrus function.

    • Mia Borzello
    • Steve Ramirez
    • Lara M. Rangel
    Reviews
    Nature Reviews Neuroscience
    Volume: 24, P: 502-517

  • Integration of large-scale airborne geophysical surveys can enable the system-scale assessment of aquifer characteristics and improved mapping of shallow subsurface structures, according to a comprehensive investigation of the Mississippi Alluvial Plain

    • Burke J. Minsley
    • J. R. Rigby
    • Wade H. Kress
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 2, P: 1-14