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Psychiatry research, Neuroimaging v.260, 2017년, pp.37 - 48   SCI SCIE
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Lost emotion: Disrupted brain-based tracking of dynamic affective episodes in anxiety and depression

Carlson, Joshua M. (Department of Psychology, 1401 Presque Isle Avenue Northern Michigan University, Marquette, MI, USA ) ; Rubin, Denis (Department of Biomedical Engineering, State University of New York at Stony Brook, Stony Brook, NY, USA ) ; Mujica-Parodi, Lilianne R. (Department of Biomedical Engineering, State University of New York at Stony Brook, Stony Brook, NY, USA ) ;
  • 초록  

    Abstract In our day-to-day lives we are confronted with dynamic sensory inputs that elicit a continuously evolving emotional response. Insight into the brain basis of the dynamic nature of emotional reactivity may be critical for understanding chronic symptoms of anxiety and depression. Here, individuals with generalized anxiety disorder, major depressive disorder, and healthy controls watched a video with dynamic affective content while fMRI activity was recorded. Across all participants there was a large-scale tracking of affective content in emotion processing regions and the default mode network. Anxious and depressed individuals displayed less brain-based coupling within these regions and the extent of this uncoupling correlated with variability in emotional numbing. Thus, abnormal neural tracking of affective information during dynamic emotional episodes appears to represent a disconnection between affective cues in the environment and an individual’s response to these cues—providing a putative neural basis for context insensitive affective reactivity and emotional numbing. Highlights Dynamics in affective valence and arousal were tracked by the brain. Default mode network and emotion regions track these dynamics in affective content. Brain-based tracking of emotion is disrupted in patients with anxiety and depression. Weakened brain-based tracking of emotion is linked to symptoms of emotional numbing.


  • 주제어

    Generalized anxiety disorder .   Major depressive disorder .   Natural vision .   Amygdala .   Default mode network.  

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