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| Content Provider | PubMed Central |
|---|---|
| Author | Ryan, John P. Sheu, Lei K. Gianaros, Peter J. |
| Abstract | Exaggerated cardiovascular reactivity to stress confers risk for cardiovascular disease. Further, individual differences in stressor-evoked cardiovascular reactivity covary with the functionality of cortical and limbic brain areas, particularly within the cingulate cortex. What remains unclear, however, is how individual differences in personality traits interact with cingulate functionality in the prediction of stressor-evoked cardiovascular reactivity. Accordingly, we tested the associations between (i) a particular personality trait, Agreeableness, which is associated with emotional reactions to conflict, (ii) resting state functional connectivity within the cingulate cortex, and (iii) stressor-evoked blood pressure (BP) reactivity. Participants (N=39, 19 men, aged 20–37 yrs) completed a resting functional connectivity MRI protocol, followed by two standardized stressor tasks that engaged conflict processing and evoked BP reactivity. Agreeableness covaried positively with BP reactivity across individuals. Moreover, connectivity analyses demonstrated that a more positive functional connectivity between the posterior cingulate (BA31) and the perigenual anterior cingulate (BA32) covaried positively with Agreeableness and with BP reactivity. Finally, statistical mediation analyses demonstrated that BA31–BA32 connectivity mediated the covariation between Agreeableness and BP reactivity. Functional connectivity within the cingulate appears to link Agreeableness and a risk factor for cardiovascular disease, stressor-evoked BP reactivity. |
| Related Links | http://dx.doi.org/10.1016/j.neuroimage.2010.11.064 |
| Ending Page | 370 |
| Page Count | 8 |
| Starting Page | 363 |
| File Format | |
| ISSN | 10538119 |
| e-ISSN | 10959572 |
| Journal | NeuroImage |
| Issue Number | 1 |
| Volume Number | 55 |
| Language | English |
| Publisher Date | 2011-03-01 |
| Access Restriction | Open |
| Subject Keyword | Cognitive Neuroscience Neurology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neurology Cognitive Neuroscience |
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