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Orbitofrontal Cortex Reactivity to Angry Facial Expression in a Social Interaction Correlates with Aggressive
Frederike Beyer1, Thomas F Münte1, Martin Göttlich1
1Department of Neurology, University of Lübeck, 23538 Lübeck, Germany.
Neural processing of angry facial expressions influences aggression in healthy males. Lower medial orbitofrontal cortex (OFC) reactivity and higher anterior cingulate cortex (ACC) activity correlate with increased aggressive behavior, highlighting their roles in social responses.
Area of Science:
- Neuroscience
- Social Psychology
- Aggression Research
Background:
- Altered processing of social cues, like angry faces, is linked to aggression.
- Limited research exists on this link in healthy individuals using realistic settings.
Purpose of the Study:
- To investigate the neural processing of angry facial expressions and its relation to aggressive behavior in healthy males.
- To explore the role of the medial orbitofrontal cortex (OFC) and anterior cingulate cortex (ACC) in modulating aggression.
Main Methods:
- Functional magnetic resonance imaging (fMRI) was used during a competitive reaction time task (Taylor Aggression Paradigm).
- Participants viewed opponents displaying neutral or angry facial expressions before choosing punishment levels.
- Data from 32 healthy male participants were analyzed.
Main Results:
- Medial orbitofrontal cortex (OFC) reactivity to angry faces negatively correlated with aggressive behavior across participants.
- Anterior cingulate cortex (ACC) activity positively correlated with aggression during angry face trials within participants.
- Angry expressions influenced neural activity patterns beyond immediate stimulus response.
Conclusions:
- The medial orbitofrontal cortex (OFC) and anterior cingulate cortex (ACC) are crucial for adaptive social responses to provocation.
- Neural responses to angry facial expressions play a significant role in regulating aggressive behavior.
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