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Related Experiment Video

Updated: Jun 22, 2026

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording
14:27

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording

Published on: August 11, 2019

Prediction, sequences and the hippocampus.

John Lisman1, A D Redish

  • 1Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02454, USA. lisman@brandeis.edu

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|June 17, 2009
PubMed
Summary
This summary is machine-generated.

Hippocampal place cells predict future locations through phase precession, a mechanism crucial for memory sequence retrieval. This predictive capability extends beyond spatial navigation, guiding behavior in various contexts.

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Last Updated: Jun 22, 2026

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Area of Science:

  • Neuroscience
  • Cognitive Science

Background:

  • The hippocampus plays a critical role in memory and spatial navigation.
  • Place cells in the hippocampus encode spatial locations.
  • Theta and gamma oscillations are key neural rhythms involved in hippocampal function.

Purpose of the Study:

  • To explore how the hippocampus retrieves memory sequences.
  • To investigate the role of phase precession in predictive coding.
  • To examine the mechanisms and behavioral relevance of sequence retrieval.

Main Methods:

  • Recording activity of hippocampal place cells in rats during navigation tasks.
  • Analyzing neural oscillations (theta and gamma) and their relationship to place cell firing.
  • Conducting experiments in both 2D environments and on a linear track.

Main Results:

  • Place cell activity exhibits phase precession relative to theta oscillations.
  • Cells were found to represent positions ahead of the animal's current location.
  • This predictive representation remained consistent regardless of the direction of travel.

Conclusions:

  • Phase precession serves as a mechanism for predicting upcoming sequences.
  • Hippocampal sequence retrieval is not limited to spatial domains and can be cued internally or externally.
  • This predictive retrieval mechanism is likely important for guiding behavior.