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Updated: Jun 2, 2026
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Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
Published on: February 6, 2019
Alcohol impairs brain reactivity to explicit loss feedback.
Lindsay D Nelson1, Christopher J Patrick, Paul Collins
1Department of Psychology, Florida State University, 1107 West Call Street, Tallahassee, FL 32306-4301, USA. nelson@psy.fsu.edu
Psychopharmacology
|May 12, 2011
Summary
Alcohol impairs the brain's ability to process performance errors and feedback, even in external contexts. This study found that alcohol significantly reduced brain responses to both positive and negative feedback, indicating a broad impairment in monitoring capabilities.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Psychopharmacology
Background:
- Alcohol consumption is known to impair performance monitoring, evidenced by reduced error-related negativity (ERN).
- It remains unclear if alcohol affects performance monitoring in contexts involving external feedback.
- This study investigates alcohol's impact on feedback processing in the brain.
Purpose of the Study:
- To determine if alcohol-induced monitoring deficits extend to external feedback contexts.
- To evaluate the effect of alcohol on the feedback-related negativity (FRN) and delta-P3 brain responses.
- To compare alcohol's impact on internal error detection (ERN) versus external feedback processing (FRN).
Main Methods:
- Randomized controlled trial with undergraduates assigned to alcohol or placebo.
- Electroencephalography (EEG) was used to measure event-related potentials (ERPs) during a gambling task.
- Time-frequency analysis differentiated theta-FRN and delta-P3 components to assess alcohol's effects.
Main Results:
- Alcohol consumption significantly attenuated both theta-FRN and delta-P3 brain responses to feedback.
- The attenuation of theta-FRN was more pronounced following negative feedback (losses) compared to positive feedback (gains).
- These findings suggest alcohol broadly impacts the brain's processing of performance-related feedback.
Conclusions:
- Alcohol pervasively impairs the brain's response to external feedback, affecting both theta-FRN and delta-P3 components.
- The enhanced attenuation of theta-FRN for losses aligns with previous ERN findings, indicating a consistent impairment in recognizing negative outcomes.
- Alcohol broadly diminishes the brain's capacity to monitor performance outcomes across various contexts.
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