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Hippocampal Contributions to Model-Based Planning and Spatial Memory.

Oliver M Vikbladh1, Michael R Meager2, John King3

  • 1Center for Neural Science, New York University School of Arts and Science, New York, NY 10003, USA.

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|March 16, 2019
PubMed
Summary
This summary is machine-generated.

The hippocampus is crucial for action planning and spatial memory. Damage to the hippocampus impairs both planning abilities and place memory, highlighting its role in cognitive functions.

Keywords:
anterior temporal lobedecision-makinghippocampushumanlesionmemorymodel-basedplanningreinforcement learningspatial

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurobiology

Background:

  • Neural mechanisms for action planning using task contingencies are poorly understood.
  • Emerging theories link action planning to hippocampal mechanisms supporting spatial memory and self-localization.
  • Direct evidence connecting planning and the hippocampal place map is limited.

Purpose of the Study:

  • To investigate the relationship between model-based planning and place memory.
  • To examine the role of the hippocampus in these cognitive functions.
  • To compare performance in healthy controls and patients with hippocampal resections.

Main Methods:

  • Investigated model-based planning and place memory in healthy controls.
  • Assessed patients with unilateral anterior temporal lobectomy and hippocampal resection.
  • Correlated planning impairment with right hippocampal lesion size, controlling for overall lesion size.

Main Results:

  • Both model-based planning and place memory were impaired in the patient group.
  • Planning impairment was significantly related to the size of the right hippocampal lesion.
  • The covariance between planning and place memory observed in controls was attenuated in patients.

Conclusions:

  • The findings clarify the neural mechanisms underlying model-based planning.
  • They highlight the hippocampus's contribution to both action planning and spatial memory.
  • This suggests that the hippocampus supports these distinct cognitive functions through shared neural mechanisms.