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Temporal Dynamics and Representational Consequences of the Control of Processing Conflict between Visual Working
Chunyue Teng1,2, Jacqueline M Fulvio1, Mattia Pietrelli1
1University of Wisconsin-Madison.
Journal of Cognitive Neuroscience
|February 7, 2025
Summary
This study reveals how the brain manages conflicting information between visual working memory and perception using two control modes. Cognitive control flexibly suppresses distracting perceptual input to protect memory representations.
Area of Science:
- Neuroscience
- Cognitive Psychology
Background:
- Visual working memory (WM) and visual perception interact closely.
- Cognitive control mechanisms are crucial for resolving conflicts between these processes.
Purpose of the Study:
- Investigate the neural underpinnings of conflict control between visual WM and perception.
- Examine the roles of preparatory and reflexive control in mitigating interference.
Main Methods:
- Electroencephalography (EEG) recorded during a dual task combining visual WM and tilt discrimination.
- Manipulation of orientation congruity between memorandum and discriminandum.
- Behavioral data fitted to a reinforcement-learning model for cognitive control estimates.
Main Results:
- Preparatory control linked to sustained frontal-midline theta and stronger memorandum representation.
- Discriminandum onset elicited a left frontal positivity reflecting control prediction error.
- Reflexive control suppressed neural representation of incongruent stimuli, causing serial bias in subsequent recall.
Conclusions:
- Demonstrates flexible recruitment of preparatory and reflexive control modes.
- Highlights the dynamic interplay of these controls in managing perceptual-mnemonic interference.
- Provides insights into neural mechanisms of cognitive control in visual processing.
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