Gray matter volume of the dorsolateral prefrontal cortex moderates the relationship between rumination and depressed mood

Previous studies have indicated that negative cognition and rumination represent two vulnerabilities to depression and moderate one another’s influence on depression. Building upon previous studies, higher inhibitory abilities potentially allow less negative memories to feed into the ruminative proc...

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Veröffentlicht in:Current psychology (New Brunswick, N.J.) N.J.), 2020-08, Vol.39 (4), p.1116-1125
Hauptverfasser: Yuan, Shuge, Ding, Cody, Yang, Wenjing, Xu, Mengsi, Zhang, Lijie, Yao, Xiaonan, Du, Xiaoli, Qiu, Jiang, Yang, Dong
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Sprache:eng
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Zusammenfassung:Previous studies have indicated that negative cognition and rumination represent two vulnerabilities to depression and moderate one another’s influence on depression. Building upon previous studies, higher inhibitory abilities potentially allow less negative memories to feed into the ruminative process, which may mitigate the deleterious impact of rumination. Additionally, dorsolateral prefrontal cortex (DLPFC) plays an important role in memory inhibition. In the current study, we explored the moderating role of DLPFC between rumination and depressed mood. We used the think/no-think paradigm to explore the brain mechanisms of memory inhibition, and subsequently investigated the moderation effect of areas of interest, related with the memory inhibition, on the relationship between rumination and depressed mood. The results showed that higher memory inhibition ability was associated with larger gray matter volume in the dorsolateral prefrontal cortex. In addition, smaller gray matter volume in this area aggravated the relationship between rumination and depressed mood. This finding might help elucidate when and why healthy individuals experience depressed mood.
ISSN:1046-1310
1936-4733
DOI:10.1007/s12144-018-0048-8