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Brain Imaging Investigation of the Memory-Enhancing Effect of Emotion
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Variations in prestimulus neural activity predict the emotion-enhanced memory effect.

Yee Ying Yick1, Luciano G Buratto, Alexandre Schaefer

  • 1aDepartment of Psychology, Durham University, Durham, UK bDepartment of Psychology, Nanyang Technological University, Singapore cInstitute of Psychology, University of Brasília, Brasília, Brazil dMonash University Malaysia, School of Business, Malaysia.

Neuroreport
|June 14, 2016
PubMed
Summary
This summary is machine-generated.

Neural activity before emotional pictures predicts memory, unlike neutral ones. This suggests emotional memory relies on processing resources available just before an event.

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Area of Science:

  • Cognitive Neuroscience
  • Neuroscience of Memory
  • Psychology of Emotion

Background:

  • Emotional events are often better remembered than neutral events.
  • Previous research suggests pre-stimulus neural activity influences memory, but findings are inconsistent.
  • The role of processing resource availability before emotional stimuli remains unclear.

Purpose of the Study:

  • To investigate if neural activity preceding emotional vs. neutral pictures predicts subsequent memory.
  • To examine memory for emotional stimuli under conditions preventing prediction of content.
  • To test mediational models of emotional memory encoding.

Main Methods:

  • Electrophysiological recordings of neural activity in participants.
  • Presentation of emotional and neutral pictures with unpredictable content.
  • Recognition memory tests 24 hours later.

Main Results:

  • Pre-onset neural activity predicted memory for emotional, but not neutral, pictures.
  • Participants showed superior recognition memory for emotional items.
  • The findings align with predictions of mediational models of emotional memory.

Conclusions:

  • Electrophysiological activity before stimulus onset is a key predictor of emotional memory.
  • Preferential encoding of emotional events is linked to processing resource availability.
  • Emotional memory enhancement may stem from increased resource mobilization before event onset.