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Related Experiment Videos

Distributed memory for both short and long term

J M Fuster1

  • 1School of Medicine, University of California at Los Angeles, Los Angeles, California 90024, USA. joaquinF@ucla.edu

Neurobiology of Learning and Memory
|October 1, 1998
PubMed
Summary
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Working memory and long-term memory share the same widely distributed neocortical networks. Sustained activation of these long-term memory networks underlies working memory function.

Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • Neuropsychology, electrophysiology, and neuroimaging reveal widespread cortical networks for memory.
  • Working memory and long-term memory are understood as largely neocortical functions.

Purpose of the Study:

  • To investigate the neural substrates shared by working memory and long-term memory.
  • To elucidate the relationship between the activation patterns of working memory and existing long-term memory networks.

Main Methods:

  • Review of evidence from neuropsychology.
  • Analysis of electrophysiological data.
  • Interpretation of neuroimaging findings.

Main Results:

  • Working memory and long-term memory predominantly utilize the same distributed neocortical network substrate.

Related Experiment Videos

  • Working memory is characterized by sustained activation within these long-term memory networks.
  • Reentrant excitatory loops within neuronal assemblies support this sustained activation.

    • Conclusions:

    • Working memory and long-term memory share overlapping and interconnected neocortical networks.
    • The sustained neural activity observed in working memory reflects the engagement of long-term memory systems.