Culture shapes electrocortical responses during emotion suppression

Area of Science:

• Psychology
• Neuroscience
• Cultural Studies

Background:

• Cultural values significantly shape emotional expression and processing.
• Asian cultures emphasize emotional control, while Western cultures value emotional expression.
• The influence of cultural display rules on underlying emotional processing remains underexplored.

Purpose of the Study:

• To investigate how cultural values influence emotional processing.
• To test the hypothesis that Asians down-regulate emotional processing when suppressing expression.
• To compare emotional processing between Asians and European Americans under different emotional regulation instructions.

Main Methods:

• Utilized event-related potentials (ERPs), specifically the parietal late positive potential (LPP), as a measure of emotional processing.
• Participants included Asian and European Americans.
• Stimuli involved viewing unpleasant and neutral images under conditions of attending to or suppressing emotional expression.

Main Results:

• Both groups initially showed similar parietal positivity to unpleasant stimuli.
• Asians exhibited a significant decrease in parietal LPP when suppressing emotions compared to attending.
• European Americans showed no LPP suppression effect but displayed increased frontal positivity when suppressing emotions.

Conclusions:

• Findings support the hypothesis that cultural training influences emotional processing, leading Asians to down-regulate responses when suppressing expression.
• Cultural differences in emotional display rules are reflected in distinct neural processing patterns.
• This research highlights the impact of culture on the neurobiological underpinnings of emotion regulation.