Jealousy increased by induced relative left frontal cortical activity

Area of Science:

• Neuroscience
• Social Psychology
• Cognitive Science

Background:

• Asymmetric frontal cortical activity is hypothesized to link social exclusion to jealousy.
• Understanding the causal role of frontal asymmetry in social emotions is crucial.

Purpose of the Study:

• To investigate the causal role of asymmetric frontal brain activity in modulating jealousy.
• To examine how manipulating frontal cortical activity affects jealousy responses to social exclusion.

Main Methods:

• Employed transcranial direct-current stimulation (tDCS) to alter frontal cortical activity.
• Utilized a modified Cyberball paradigm to induce social exclusion and jealousy.
• Measured self-reported jealousy levels after tDCS and social exclusion.

Main Results:

• tDCS aimed at increasing relative left frontal cortical activity led to significantly higher self-reported jealousy.
• This effect was observed specifically in participants who experienced social exclusion.
• Compared to right frontal stimulation or sham conditions, left frontal stimulation potentiated jealousy.

Conclusions:

• Asymmetric frontal cortical activity plays a causal role in the experience of jealousy following social exclusion.
• Findings suggest that the direction of frontal asymmetry influences motivated behaviors and emotional responses.
• Further research is needed to explore the specificity of these effects and their broader implications.