Trait anger modulates neural activity in the fronto-parietal attention network

Area of Science:

• Neuroscience
• Psychology
• Emotional Processing

Background:

• Anger is a high-arousal, approach-related negative emotion.
• Individual differences in trait anger and their impact on visual stimulus processing require further investigation.

Purpose of the Study:

• To explore neural responses to visual stimuli in men with high trait anger compared to controls.
• To investigate how trait anger influences the processing of emotional visual stimuli.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
• Participants viewed standardized images varying in valence and arousal.
• Groups included men with high trait anger and controls (normative to low anger scores).

Main Results:

• Individuals with high trait anger showed increased activation in the left-lateralized ventral fronto-parietal attention network in response to unpleasant images.
• A significant interaction in the left thalamus/pulvinar indicated higher pulvinar activation in high trait anger individuals for high-arousal unpleasant images.
• These findings suggest trait anger is associated with neural regions involved in executive attention and sensory integration.

Conclusions:

• Individual differences in trait anger in men are associated with specific neural processing patterns for unpleasant emotional stimuli.
• The findings highlight the role of trait anger in modulating attentional and sensory integration networks, particularly for high-arousal negative images.