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PLoS One. 2010 Sep 7;5(9):e12611. doi: 10.1371/journal.pone.0012611.

Default network deactivations are correlated with psychopathic personality traits.

Author information

1
Brain and Creativity Institute, University of Southern California, Los Angeles, California, USA. tsheng@usc.edu

Abstract

BACKGROUND:

The posteromedial cortex (PMC) and medial prefrontal cortex (mPFC) are part of a network of brain regions that has been found to exhibit decreased activity during goal-oriented tasks. This network is thought to support a baseline of brain activity, and is commonly referred to as the "default network". Although recent reports suggest that the PMC and mPFC are associated with affective, social, and self-referential processes, the relationship between these default network components and personality traits, especially those pertaining to social context, is poorly understood.

METHODOLOGY/PRINCIPAL FINDINGS:

In the current investigation, we assessed the relationship between PMC and mPFC deactivations and psychopathic personality traits using fMRI and a self-report measure. We found that PMC deactivations predicted traits related to egocentricity and mPFC deactivations predicted traits related to decision-making.

CONCLUSIONS/SIGNIFICANCE:

These results suggest that the PMC and mPFC are associated with processes involving self-relevancy and affective decision-making, consistent with previous reports. More generally, these findings suggest a link between default network activity and personality traits.

PMID:
20830290
PMCID:
PMC2935364
DOI:
10.1371/journal.pone.0012611
[Indexed for MEDLINE]
Free PMC Article

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