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• W2151788468 abstract "Previous functional imaging studies using symptom provocation in patients with social anxiety disorder (SAD) reported inconsistent findings, which might be at least partially related to different time-dependent activation profiles in different brain areas. In the present functional magnetic resonance imaging study, we used a novel video-based symptom provocation design in order to investigate the magnitude and time course of activation in different brain areas in 20 SAD patients and 20 healthy controls. The disorder-related videos induced increased anxiety in patients with SAD as compared to healthy controls. Analyses of brain activation to disorder-related versus neutral video clips revealed amygdala activation during the first but not during the second half of the clips in patients as compared to controls. In contrast, the activation in the insula showed a reversed pattern with increased activation during the second but not during the first half of the video clips. Furthermore, a cluster in the anterior dorsal anterior cingulate cortex showed a sustained response for the entire duration of the videos. The present findings suggest that different regions of the fear network show differential temporal response patterns during video-induced symptom provocation in SAD. While the amygdala is involved during initial threat processing, the insula seems to be more involved during subsequent anxiety responses. In accordance with cognitive models of SAD, a medial prefrontal region engaged in emotional-cognitive interactions is generally hyperactivated." @default.
• W2151788468 created "2016-06-24" @default.
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• W2151788468 date "2014-01-01" @default.
• W2151788468 modified "2023-10-18" @default.
• W2151788468 title "Area-dependent time courses of brain activation during video-induced symptom provocation in social anxiety disorder" @default.
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• W2151788468 doi "https://doi.org/10.1186/2045-5380-4-6" @default.
• W2151788468 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4052290" @default.
• W2151788468 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24921039" @default.
• W2151788468 hasPublicationYear "2014" @default.
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