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• W4378895340 endingPage "120207" @default.
• W4378895340 startingPage "120207" @default.
• W4378895340 abstract "Trait anxiety diminishes with age, which may result from age-related decline in registering salient emotional stimuli and/or enhancement in emotion regulation. We tested the hypotheses in 88 adults 21 to 85 years of age and studied with fMRI of the Hariri task. Age-related decline in stimulus registration would manifest in delayed reaction time (RT) and diminished saliency circuit activity in response to emotional vs. neutral stimuli. Enhanced control of negative emotions would manifest in diminished limbic/emotional circuit and higher prefrontal cortical (PFC) responses to negative emotion. The results showed that anxiety was negatively correlated with age. Age was associated with faster RT and diminished activation of the medial PFC, in the area of the dorsal and rostral anterior cingulate cortex (dACC/rACC) - a hub of the saliency circuit - during matching of negative but not positive vs. neutral emotional faces. A slope test confirmed the differences in the regressions. Further, age was not associated with activation of the PFC in whole-brain regression or in region-of-interest analysis of the dorsolateral PFC, an area identified from meta-analyses of the emotion regulation literature. Together, the findings fail to support either hypothesis; rather, the findings suggest age-related automaticity in processing negative emotions as a potential mechanism of diminished anxiety. Automaticity results in faster RT and diminished anterior cingulate activity in response to negative but not positive emotional stimuli. In support, analyses of psychophysiological interaction demonstrated higher dACC/rACC connectivity with the default mode network, which has been implicated in automaticity in information processing. As age increased, individuals demonstrated faster RT with higher connectivity during matching of negative vs. neutral images. Automaticity in negative emotion processing needs to be investigated as a mechanism of age-related reduction in anxiety." @default.
• W4378895340 created "2023-06-01" @default.
• W4378895340 creator A5038953248 @default.
• W4378895340 creator A5040052604 @default.
• W4378895340 creator A5047855118 @default.
• W4378895340 creator A5052676364 @default.
• W4378895340 creator A5054640156 @default.
• W4378895340 creator A5080636538 @default.
• W4378895340 date "2023-08-01" @default.
• W4378895340 modified "2023-10-09" @default.
• W4378895340 title "Age-related reduction in trait anxiety: Behavioral and neural evidence of automaticity in negative facial emotion processing" @default.
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