How disgust facilitates avoidance: an ERP study on attention modulation by threats

Area of Science:

• Cognitive Neuroscience
• Social Psychology
• Emotion Science

Background:

• Understanding how emotions, particularly disgust and anger, influence attention is crucial for comprehending threat perception.
• Facial expressions serve as key social cues, but their processing can be modulated by group membership (in-group vs. out-group).

Purpose of the Study:

• To investigate the differential attention modulation of disgust versus anger facial expressions.
• To examine the impact of in-group versus out-group status on the early and later stages of attention processing for emotional faces.

Main Methods:

• Utilized a dot-probe task to assess attention allocation towards emotional facial stimuli.
• Measured electrophysiological responses, specifically the occipital P1 (early processing) and P3 (later processing) components.
• Employed Chinese (in-group) and foreign (out-group) faces displaying anger and disgust.

Main Results:

• In the in-group condition, angry faces showed enhanced early P1, while disgusted faces showed reduced early P1. Later, P3 amplitudes were larger for disgust cues and smaller for anger cues.
• In the out-group condition, attention modulation effects diminished at the early P1 stage for both emotions.
• However, enhanced P3 amplitudes were observed for both disgust and anger validly cued targets in the out-group condition at the later stage.

Conclusions:

• Attention modulation by emotional faces operates in distinct early and later processing stages, influenced by group membership.
• While perceptual differentiation of out-group emotional faces is possible, a deeper psychological understanding of subtle emotional differences may be limited.