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Grid cell distortion is associated with increased distance estimation error in polarized environments.
Stephen Duncan1, Maneesh V Kuruvilla2, Benjamin Thompson3
1School of Psychology and Neuroscience, University of St Andrews, St Mary's Quad, South Street, St Andrews KY16 9JP, UK; Department of Psychology & Brain Sciences, Indiana University, 1101 E. 10th Street, Bloomington, IN 47405, USA.
Current Biology : CB
|September 19, 2025
Summary
Grid cells in the brain help us estimate distances during navigation. Their regular firing patterns are disrupted in environments with distorted cues, impairing distance estimation in both rats and humans.
Area of Science:
- Neuroscience
- Cognitive Science
- Spatial Navigation
Background:
- Grid cells in the medial entorhinal cortex (MEC) form hexagonal firing fields, potentially serving as a spatial metric for memory and navigation.
- MEC disruption impairs spatial memory, while grid cell properties also support path integration, crucial for estimating distances.
Purpose of the Study:
- To investigate the role of grid cell firing regularity in active navigation and distance estimation.
- To determine if disruptions in grid regularity, particularly in polarized environments, affect distance estimation capabilities.
Main Methods:
- Observational study involving rats and humans navigating environments with manipulated cues.
- Analysis of grid cell firing patterns and correlation with behavioral performance in distance estimation tasks.
- Investigated the impact of environmental polarization and recent experience on grid regularity.
Main Results:
- Both rats and humans exhibited impaired distance estimation in polarized environments.
- Grid regularity was distorted in polarized environments and by recent experience.
- Distorted grid regularity correlated with impaired distance estimation in rats.
Conclusions:
- Grid cells are crucial for accurate distance estimation during navigation.
- Environmental factors and recent experience can distort grid cell function, impacting spatial awareness.
- Findings support the hypothesis that grid cell regularity underpins path integration and navigation accuracy.
Keywords:
LECMECcognitive maphippocampuslateral entorhinal cortexmedial entorhinal cortexnavigationpath intergrationplace cellsspatial memorywayfindingMore Related Videos
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