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Distinct mechanisms underlying cross-modal semantic conflict and response conflict processing
Honghui Xu1,2,3, Guochun Yang4,5, Haiyan Wu3
1CAS Key Laboratory of Behavioral Science, Institute of Psychology, Beijing 100101, China.
Cerebral Cortex (New York, N.Y. : 1991)
|January 11, 2024
Summary
This study investigated cross-modal conflict processing using an audiovisual Stroop task. Distinct neural mechanisms underlie semantic and response conflict, supporting domain-specific cognitive control.
Area of Science:
- Cognitive Neuroscience
- Neuroscience
- Psychology
Background:
- Task-irrelevant stimuli can interfere with semantic and response processing.
- Previous research identified common and distinct mechanisms for visual semantic and response conflict.
- Cross-modal conflict processing mechanisms remain largely unexplored.
Purpose of the Study:
- To investigate whether common or distinct neural mechanisms underlie semantic and response conflict in the cross-modal domain.
- To examine cognitive control processes in audiovisual conflict scenarios.
- To differentiate neural signatures of semantic versus response conflict.
Main Methods:
- Utilized an audiovisual 2-1 mapping Stroop task.
- Employed electroencephalography (EEG) to record neural activity.
- Analyzed behavioral responses and EEG data (frontal N2, parietal N450, theta power).
Main Results:
- Confirmed significant cross-modal semantic and response conflict behaviorally.
- Observed increased frontal N2 amplitude and theta power exclusively during semantic conflict.
- Found increased parietal N450 amplitude solely in the response conflict condition.
Conclusions:
- Distinct neural mechanisms are involved in processing cross-modal semantic and response conflict.
- Findings support domain-specific cognitive control mechanisms in multistage conflict processing.
- Highlights differences in neural processing of semantic versus response conflicts across sensory modalities.
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