Increased cerebellar-default-mode-network connectivity in drug-naive major depressive disorder at rest

Medicine
Wenbin GuoJingping Zhao

Abstract

The default-mode network (DMN) has been implicated in the neurobiology of major depressive disorder (MDD), and the cerebellum is suggested to be involved in high-order cognitive network such as the DMN. However, the specific contribution of the cerebellum to the DMN alterations remains equivocal. This study was conducted to examine the cerebellar-DMN connectivity in drug-naive MDD directly by using the cerebellum Crus I as seeds.Forty-four drug-naive MDD patients and 44 healthy controls participated in the resting-state scan. Functional connectivity (FC) was applied to analyze the images.Significantly increased FCs were observed between the right Crus I and the right inferior frontal cortex (orbital part)/superior temporal pole, bilateral MPFC (orbital part), and left middle temporal gyrus in the patients compared with the controls. There was a significantly positive correlation between the z values of the right Crus I-bilateral MPFC (orbital part) connectivity and the scores of Automatic Thoughts Questionnaire in the patients (r = 0.329, P = 0.029).The findings reveal that depressed patients have increased cerebellar-DMN connectivity with clinical significance, and thus highlight the contribution of the cerebellum to the DMN a...Continue Reading

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Citations

Jun 1, 2015·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Yan SongWenbin Guo
Apr 8, 2015·Journal of Affective Disorders·Wenbin GuoJingping Zhao
May 5, 2016·Neuroscience Bulletin·Kai ZhangMei Tian
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Aug 1, 2020·Journal of Affective Disorders·Dao-Min ZhuJiajia Zhu
Jul 24, 2018·Journal of the Neurological Sciences·Xinxin MaHaibo Chen

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