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Related Experiment Videos

Interactions between forms of memory: when priming hinders new episodic learning.

A D Wagner1, A Maril, D L Schacter

  • 1Department of Brain and Cognitive Science, Massachusetts Institute of Technology and MGH-NMR Center, Cambridge, MA 02139, USA.

Journal of Cognitive Neuroscience
|August 17, 2001
PubMed
Summary

Priming during memory encoding may hinder later recall. Greater behavioral and neural priming during re-encoding was linked to reduced subsequent explicit memory performance, suggesting past experiences can impede new learning.

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Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • Human memory comprises distinct forms like priming and explicit memory.
  • While functionally and neuroanatomically separate, their interaction during memory formation is poorly understood.

Purpose of the Study:

  • To investigate the counterintuitive hypothesis that priming during episodic encoding negatively impacts subsequent explicit memory.
  • To explore the relationship between priming during re-encoding and explicit memory performance.

Main Methods:

  • Utilized behavioral and functional magnetic resonance imaging (fMRI) to assess priming.
  • Employed an experimental design manipulating spacing/lag effects to vary priming magnitudes during a second study episode.
  • Examined the correlation between priming during re-encoding and subsequent explicit memory test performance.

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Main Results:

  • Increased behavioral priming (faster reaction times) and neural priming (reduced left inferior prefrontal activation) during re-encoding correlated with diminished subsequent explicit memory.
  • Greater priming effects during re-encoding, particularly after a long lag, were associated with the least benefit from the second study episode for explicit memory.

Conclusions:

  • Priming effects during the re-encoding of past experiences may interfere with the formation of new episodic memories.
  • These findings challenge traditional views by suggesting a detrimental interaction between priming and explicit memory encoding.