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Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
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Remote Memory and the Hippocampus: A Constructive Critique.

Daniel N Barry1, Eleanor A Maguire1

  • 1Wellcome Centre for Human Neuroimaging, Queen Square Institute of Neurology, University College London, 12 Queen Square, London WC1N 3AR, UK.

Trends in Cognitive Sciences
|December 12, 2018
PubMed
Summary
This summary is machine-generated.

The hippocampus reconstructs remote memories by assembling neocortical elements into coherent scenes, even when original memory traces fade. This process explains hippocampal involvement in recalling distant experiences.

Keywords:
episodic memoryreconstructionscenessystems-level consolidationvmPFC

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Memory Research

Background:

  • The hippocampus is involved in recalling distant memories.
  • Memory traces in the hippocampus appear to vanish over time.
  • Existing theories do not fully explain this apparent contradiction.

Purpose of the Study:

  • To propose a novel theory explaining hippocampal function in remote memory recall.
  • To reconcile the role of the hippocampus in remote memory with the transient nature of its traces.

Main Methods:

  • Theoretical modeling of memory consolidation and reconstruction.
  • Review and synthesis of existing neuroscientific and psychological evidence.

Main Results:

  • The hippocampus reconstructs remote memories by assembling neocortical elements.
  • This reconstruction forms spatially coherent scenes for memory events.
  • Ventromedial prefrontal cortex input likely facilitates this reconstruction process.

Conclusions:

  • The proposed model accommodates both hippocampal recruitment in remote recall and trace decay.
  • This process-oriented view aligns with the hippocampus's broader role in constructing mental representations.
  • Remote memory recall relies on hippocampal reconstruction rather than persistent original traces.