Rumination and Overrecruitment of Cognitive Control Circuits in Depression

沉思 萧条(经济学) 心理学 认知 临床心理学 精神科 宏观经济学 经济
作者
Heekyeong Park,Rayus Kuplicki,Martin P. Paulus,Salvador M. Guinjoan
出处
期刊:Biological Psychiatry: Cognitive Neuroscience and Neuroimaging [Elsevier BV]
卷期号:9 (8): 800-808 被引量:5
标识
DOI:10.1016/j.bpsc.2024.04.013
摘要

Rumination is associated with greater cognitive dysfunction and treatment resistance in major depressive disorder (MDD), yet its underlying neural mechanisms are not well understood. Since rumination is characterized by difficulty in controlling negative thoughts, the present study investigated whether rumination is associated with aberrant cognitive control in the absence of negative emotional information. Individuals with MDD (n=176) and healthy volunteers (n=52) completed the Stop Signal Task with varied stop signal difficulty during functional magnetic resonance imaging. In the task, a longer stop signal asynchrony made stopping difficult (Hard-stop) while a shorter stop signal asynchrony allowed more time for stopping (Easy-stop). In MDD participants, higher rumination intensity was associated with greater neural activity in response to difficult inhibitory control in the frontoparietal regions. Greater activation for difficult inhibitory control associated with rumination was also positively related to state fear. The imaging results provide compelling evidence for the neural basis of inhibitory control difficulties in MDD individuals with high rumination. The association between higher rumination intensity and greater neural activity in regions involved in difficult inhibitory control tasks may provide treatment targets for interventions aimed at improving inhibitory control and reducing rumination in this population.
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