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Updated: Aug 12, 2025

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Entorhinal grid-like codes and time-locked network dynamics track others navigating through space.

Isabella C Wagner1,2,3, Luise P Graichen4, Boryana Todorova4

  • 1Social, Cognitive and Affective Neuroscience Unit, Department of Cognition, Emotion, and Methods in Psychology, Faculty of Psychology, University of Vienna, 1010, Vienna, Austria. isabella.wagner@univie.ac.at.

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|January 31, 2023
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Summary
This summary is machine-generated.

Entorhinal cortex grid-like codes track others' movements during navigation. This brain activity, observed via fMRI, is crucial for socio-spatial navigation and understanding others' locations in dynamic environments.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Spatial Navigation

Background:

  • Grid cells in the entorhinal cortex are vital for self-location and navigation.
  • It remains unclear if these cells also track the movement of others.

Purpose of the Study:

  • To investigate the role of entorhinal grid-like codes in socio-spatial navigation.
  • To determine if entorhinal grid activity tracks demonstrator movement.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used on 60 participants.
  • Participants observed and re-traced paths of a demonstrator in a virtual reality environment.

Main Results:

  • Entorhinal grid-like codes were found to track the demonstrator's movement.
  • Grid cell activity correlated with co-activation and connectivity in brain regions including the striatum, hippocampus, and parietal cortex.
  • Stronger grid-related effects during observation predicted worse performance in subsequent path retracing.

Conclusions:

  • Entorhinal grid-like codes contribute significantly to socio-spatial navigation.
  • Network dynamics linked to grid cell activity may facilitate the brain-wide distribution of information about others' locations.