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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology
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Hearing fearful prosody impairs visual working memory maintenance.

François Thiffault1, Justine Cinq-Mars1, Benoît Brisson1

  • 1CogNAC Research Group (Cognition, Neurosciences, Affect et Comportement), Québec, Canada; Département de Psychologie, Université du Québec à Trois-Rivières, Québec, Canada.

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
|March 29, 2024
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Summary

Negative emotional sounds interfere with visual working memory (WM) by consuming cognitive resources. This cross-modal interference, even without behavioral changes, impacts WM maintenance, suggesting a shared resource pool.

Keywords:
Auditory P2Contralateral delay activityEmotional prosodyEvent-related potentialsInterferenceVisual working memory

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Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • Distractors negatively impact working memory (WM) performance.
  • Negative emotional distractors cause more significant WM deficits than neutral ones.
  • Previous research focused on same-modality interference, leaving cross-modal effects understudied.

Purpose of the Study:

  • Investigate cross-modal interference effects on visual working memory (VWM).
  • Examine the impact of emotional auditory distractors on VWM performance and neural correlates.
  • Explore the relationship between distractor salience and WM maintenance using electrophysiology.

Main Methods:

  • 20 participants completed a visual change-detection task for VWM.
  • Auditory distractors (fearful vs. neutral prosody) were presented.
  • Electrophysiological activity (CDA and P2 ERPs) was recorded.

Main Results:

  • Behaviorally, fearful prosody did not significantly reduce VWM accuracy compared to neutral prosody.
  • Fearful distractors elicited a larger P2 event-related potential (ERP) amplitude than neutral distractors.
  • A correlation was found between P2 amplitude differences and contralateral delay activity (CDA) differences, indicating VWM maintenance was impacted.

Conclusions:

  • Fearful auditory stimuli can interfere with VWM maintenance, despite no significant behavioral changes.
  • The processing of salient emotional auditory distractors may consume cognitive resources from a shared pool, impacting VWM.
  • This study provides evidence for cross-modal interference in working memory, particularly with emotional stimuli.