Behavioral and brain differences in the processing of negative emotion in previously depressed individuals: An exploratory analysis of population-based data.
Jakub Nagrodzki, Luca Passamonti, Suzanne Schweizer, Jason Stretton, Ethan Knights, Richard N Henson, Noham Wolpe
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引用次数: 0
Abstract
Depressed individuals show significant biases in the processing of emotional stimuli, focusing attention on negative facial expressions (termed "attentional negativity bias"). Some of these biases persist in previously depressed individuals, but their mechanisms remain largely unknown. Here, in a population-based study in which participants (n = 134, 68 females; 21-92 years) were recruited as part of the Cambridge Centre for Ageing and Neuroscience in 2010-2014, we explored (a) the cognitive process underlying attentional negativity bias; (b) whether this process is associated with a self-reported history of depression; and (c) the neural correlates of this process. Participants completed an implicit emotion processing task, while functional MRI was acquired. Drift-diffusion modeling was used to calculate each participant's tendency for sustained task-irrelevant attention on negative (angry) compared to neutral faces. In the cohort, 14% of participants reported a history of depression. Drift-diffusion modeling showed reduced drift rate for angry compared to neutral faces. The magnitude of this reduction was associated with self-reported depression history. Across the whole group, drift rate for angry faces was associated with increased brain activity when processing angry versus neutral faces in areas of bilateral insula/inferior frontal gyrus and bilateral parietal cortex. Our results suggest that attentional negativity bias is explained by slower task-relevant drift rate for negative (angry) stimuli. This slower drift rate is associated with the difference in brain activity when processing these stimuli, possibly reflecting increased emotional engagement. Such altered processing may persist even after a depressive episode, but this finding should be validated in clinical samples. (PsycInfo Database Record (c) 2025 APA, all rights reserved).
期刊介绍:
Emotion publishes significant contributions to the study of emotion from a wide range of theoretical traditions and research domains. The journal includes articles that advance knowledge and theory about all aspects of emotional processes, including reports of substantial empirical studies, scholarly reviews, and major theoretical articles. Submissions from all domains of emotion research are encouraged, including studies focusing on cultural, social, temperament and personality, cognitive, developmental, health, or biological variables that affect or are affected by emotional functioning. Both laboratory and field studies are appropriate for the journal, as are neuroimaging studies of emotional processes.