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Neurophysiologic evidence for increased retrieval suppression among negative ruminators.
Aarti Nair1, Joshua C Eyer2, Mark E Faust3
1Department of Psychology, School of Behavioral Health, Loma Linda University, Loma Linda, CA, USA.
Brain and Behavior
|August 5, 2020
Summary
This study investigated cognitive control over memory retrieval using event-related potentials (ERPs). Higher brooding correlated with greater modulation of retrieval-related brain activity, suggesting a link between rumination and memory control.
Area of Science:
- Cognitive Neuroscience
- Psychology
Background:
- Unwanted memory retrieval can be suppressed, a process involving cognitive control.
- Understanding the neural mechanisms of retrieval suppression and its relation to rumination is crucial.
Purpose of the Study:
- To examine event-related potential (ERP) correlates of inhibitory cognitive control during memory retrieval.
- To investigate the link between retrieval control and ruminative memory styles.
Main Methods:
- Participants learned face-picture associations.
- ERPs were recorded during 'think' and 'no-think' trials while viewing face cues.
Main Results:
- Emotional valence modulated early posterior ERPs (P1).
- Memory strategy modulated frontal ERPs (P3).
- Brooding (a form of rumination) positively correlated with a late posterior ERP (LC) linked to successful retrieval.
Conclusions:
- Cognitive control involves early emotional and strategic separation, followed by combined control over working memory access.
- Individuals with higher brooding exhibit greater modulation of retrieval-related brain activity.
