Asymmetry in Resting Intracortical Activity as a Buffer to Social Threat

Autor: Petra E. Pajtas, Katrina Koslov, Wendy Berry Mendes, Diego A. Pizzagalli
Rok vydání: 2011
Předmět:
Zdroj: Psychological Science. 22:641-649
ISSN: 1467-9280
0956-7976
DOI: 10.1177/0956797611403156
Popis: Social rejection can create powerful changes in our brains and bodies. Here, we examined brain-based individual differences associated with buffering against cardiovascular threat responses to social rejection. Using electroencephalographic source localization techniques, we examined differences in intracortical asymmetry with the prediction that individuals with greater left relative to right dorsolateral prefrontal activity would show a more approach motivated response to social rejection. Eighty-four female participants were randomly assigned to stressful situations characterized by either social rejection, social evaluation without rejection, or self-evaluation. Among those assigned to social rejection, the greater the left prefrontal intracortical activity at baseline, the more participants had adaptive cardiovascular profiles and the more participants reported approach-oriented emotions. Social evaluation without rejection and self-evaluation did not show these relationships. These data are the first to show that social context matters when attempting to link individual neural differences in cortical asymmetry with approach-related cardiovascular and emotional outcomes.
Databáze: OpenAIRE