Abstract
Previous studies have established that the amygdala plays an important role in trait anxiety. However, there remains limited knowledge regarding the changes in amygdala-centered effective connectivity network associated with this trait. The current study employed the Granger Causal analysis to investigate the directional connectivity patterns involving the amygdala in relation to trait anxiety in a large cohort of young adults (N = 424). The results revealed a negative association between trait anxiety scores and the Granger causality from the left middle frontal gyrus and right superior frontal gyrus to the right amygdala. Conversely, higher trait anxiety levels were found to be associated with increased effective connectivity from the left amygdala to the left hippocampus. These results demonstrated the significance of the prefrontal cortex-amygdala-hippocampus neural circuitry in the neurobiological mechanisms underlying trait anxiety. Our findings advance the comprehension of this characteristic, holding promise for informing strategies in the prevention and treatment of related mental disorders.
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Data availability
Our data was obtained from a publicly accessible database. For specific details, please refer to this referenced literature (Liu et al., 2017).
Code availability
These data were analyzed by the following software applications available in the public domain: SPM8 (Wellcome Department of Imaging Neuroscience, University College London, U.K.), DPABI (http://rfmri.org/DPABI), the REST-GCA in the REST toolbox (http://www.restfmri.net), and the PROCESS macro Model 4 within SPSS 20.0.
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This work was supported by the Natural Scientific Foundation of China (32100873) and the Fundamental Research Funds for the Central Universities (2072021132).
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S.X. and J.Q. designed the study; J.J.C., X.L. and S.X. analyzed and interpreted the data; J.J.C., X.L. and S.X wrote the manuscript; All authors reviewed the manuscript.
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Chang, J., Liu, X., Xue, S. et al. An amygdala-centered effective connectivity network in trait anxiety. Brain Imaging and Behavior (2023). https://doi.org/10.1007/s11682-023-00837-8
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DOI: https://doi.org/10.1007/s11682-023-00837-8