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Related Experiment Video

Updated: May 23, 2026

Modeling the Functional Network for Spatial Navigation in the Human Brain
05:55

Modeling the Functional Network for Spatial Navigation in the Human Brain

Published on: October 13, 2023

Head direction maps remain stable despite grid map fragmentation.

Jonathan R Whitlock1, Dori Derdikman

  • 1Kavli Institute for Systems Neuroscience and the Centre for the Biology of Memory, Norwegian University of Science and Technology Trondheim, Norway.

Frontiers in Neural Circuits
|April 6, 2012
PubMed
Summary
This summary is machine-generated.

Head direction cells, which encode direction, remain unaffected when grid cells, which encode location, change their firing patterns in complex environments. This suggests the head direction system is independent of the grid-place system.

Keywords:
cognitive mapentorhinal cortexgrid cellshead direction cellshippocampusremapping

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Area of Science:

  • Neuroscience
  • Spatial Navigation

Background:

  • Brain areas involved in spatial encoding contain place cells, grid cells (position), and head direction cells (azimuth).
  • Prior research suggests head direction calculation may not depend on position calculation, despite co-location of cell types.

Purpose of the Study:

  • To investigate the relationship between grid cell firing patterns and head direction cell tuning.
  • To determine if head direction representation is affected by the restructuring of grid cell firing fields.

Main Methods:

  • Analysis of head direction cell data from rats in multi-compartment (hairpin maze) and open-field environments.
  • Comparison of head direction tuning in environments with different spatial complexities.
  • Examination of grid-like and head direction properties in conjunctive cells.

Main Results:

  • Head direction cell tuning remained consistent across environments, irrespective of environmental complexity.
  • Grid cell firing patterns fragmented in the multi-compartment environment, unlike in the open-field.
  • Conjunctive cells showed selective fragmentation of grid properties, while head direction properties remained intact.

Conclusions:

  • Head direction representation is not altered by the dynamic restructuring of grid cell firing fields.
  • Findings support the hypothesis that the head direction system operates independently or in parallel to the grid-place system.