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Fractionating the episodic buffer.

Moran Twick1, Daniel A Levy2

  • 1Ashkelon Academic College, Baruch Ivcher School of Psychology, Interdisciplinary Center Herzliya, Israel.

Brain and Cognition
|September 26, 2021
PubMed
Summary
This summary is machine-generated.

The episodic buffer, a working memory component, may function as two systems. One system for schematic representations is hippocampus-independent, while novel associative binding requires the hippocampus.

Keywords:
EpisodicSchemaSemanticShort-term memoryWorking memory

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Area of Science:

  • Cognitive Neuroscience
  • Neuropsychology

Background:

  • The episodic buffer is a key concept in working memory, explaining prose recall in amnesic patients.
  • It has been increasingly linked to binding functions in memory research.

Purpose of the Study:

  • To propose a fractionation of the episodic buffer into two distinct functional systems.
  • To re-evaluate the role of the episodic buffer in light of recent memory research.

Main Methods:

  • Analysis of performance data from memory-impaired and healthy individuals across various tasks.
  • Theoretical integration of findings related to working memory and amnesia.

Main Results:

  • Evidence suggests the episodic buffer can be divided into two systems: a schematic store and a novel associative binding system.
  • The schematic store appears hippocampus-independent and is preserved in amnesia.
  • Short-term maintenance of novel associative binding relies on the hippocampus.

Conclusions:

  • The episodic buffer is not a single entity but comprises at least two functionally dissociable systems.
  • A hippocampus-independent schematic store supports conceptual representations.
  • A hippocampus-dependent system is crucial for short-term maintenance of novel associative bindings, linking it to long-term memory.