Journal
PSYCHOLOGICAL SCIENCE
Volume 20, Issue 12, Pages 1500-1506Publisher
SAGE PUBLICATIONS INC
DOI: 10.1111/j.1467-9280.2009.02476.x
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Funding
- NICHD NIH HHS [T32 HD007151, 32-HD007151, T32 HD007151-30] Funding Source: Medline
- NIMH NIH HHS [R01 MH043454, P50 MH069315, R01 MH043454-19, P50 MH069315-02, P50 MH069315-05, R37/R01-MH43454, P50-MH069315, R01 MH043454-20, R37 MH043454, R37 MH043454-17, P50 MH069315-04, R37 MH043454-16, R37 MH043454-15, R01 MH043454-18, P50 MH069315-03] Funding Source: Medline
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Individuals show marked variation in their responses to threat. Such individual differences in behavioral inhibition play a profound role in mental and physical well-being. Behavioral inhibition is thought to reflect variation in the sensitivity of a distributed neural system responsible for generating anxiety and organizing defensive responses to threat and punishment. Although progress has been made in identifying the key constituents of this behavioral inhibition system in humans, the involvement of dorsolateral prefrontal cortex (DLPFC) remains unclear. Here, we acquired self-reported Behavioral Inhibition System Sensitivity scores and high-resolution electroencephalography from a large sample (n = 51). Using the enhanced spatial resolution afforded by source modeling techniques, we show that individuals with greater tonic (resting) activity in right-posterior DLPFC rate themselves as more behaviorally inhibited. This observation provides novel support for recent conceptualizations of behavioral inhibition and clues to the mechanisms that might underlie variation in threat-induced negative affect.
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