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Aberrant functional connectivity in depression as an index of state and trait rumination.


ABSTRACT: Depression has been shown to be related to a variety of aberrant brain functions and structures. Particularly the investigation of alterations in functional connectivity (FC) in major depressive disorder (MDD) has been a promising endeavor, since a better understanding of pathological brain networks may foster our understanding of the disease. However, the underling mechanisms of aberrant FC in MDD are largely unclear. Using functional near-infrared spectroscopy (fNIRS) we investigated FC in the cortical parts of the default mode network (DMN) during resting-state in patients with current MDD. Additionally, we used qualitative and quantitative measures of psychological processes (e.g., state/trait rumination, mind-wandering) to investigate their contribution to differences in FC between depressed and non-depressed subjects. Our results indicate that 40% of the patients report spontaneous rumination during resting-state. Depressed subjects showed reduced FC in parts of the DMN compared to healthy controls. This finding was linked to the process of state/trait rumination. While rumination was negatively correlated with FC in the cortical parts of the DMN, mind-wandering showed positive associations.

SUBMITTER: Rosenbaum D 

PROVIDER: S-EPMC5438394 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Aberrant functional connectivity in depression as an index of state and trait rumination.

Rosenbaum David D   Haipt Alina A   Fuhr Kristina K   Haeussinger Florian B FB   Metzger Florian G FG   Nuerk Hans-Christoph HC   Fallgatter Andreas J AJ   Batra Anil A   Ehlis Ann-Christine AC  

Scientific reports 20170519 1


Depression has been shown to be related to a variety of aberrant brain functions and structures. Particularly the investigation of alterations in functional connectivity (FC) in major depressive disorder (MDD) has been a promising endeavor, since a better understanding of pathological brain networks may foster our understanding of the disease. However, the underling mechanisms of aberrant FC in MDD are largely unclear. Using functional near-infrared spectroscopy (fNIRS) we investigated FC in the  ...[more]

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