Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80042
Title: Neurodevelopmental changes in the relationship between stress perception and prefrontal-amygdala functional circuitry
Authors: Wu, J
Geng, X
Shao, R
Wong, NML
Tao, J
Chen, L
Chan, CCH 
Lee, TMC
Keywords: Amygdala, brain development
Dynamic causal modeling
Resting-state functional connectivity
Stress
Ventromedial prefrontal cortex
Issue Date: 2018
Publisher: Elsevier
Source: Neuroimage : clinical, 2018, v. 20, p. 267-274 How to cite?
Journal: Neuroimage : clinical 
Abstract: Our brain during distinct developmental phases may show differential responses to perceived psychological stress, yet existing research specifically examining neurodevelopmental changes in stress processing is scarce. To fill in this research gap, this functional magnetic resonance imaging (fMRI) study examined the relationship between perceived stress and resting-state neural connectivity patterns among 67 healthy volunteers belonging to three age groups (adolescents, young adults and adults), who were supposed to be at separate neurodevelopmental phases and exhibit different affect regulatory processes in the brain. While the groups showed no significant difference in self-reported general perceived stress levels, the functional connectivity between amygdala and ventromedial prefrontal cortex (vmPFC) was positively and negatively correlated with perceived stress in adolescents and young adults respectively, while no significant correlations were observed in adults. Furthermore, among adolescents, the causal functional interaction between amygdala and vmPFC exhibited bottom-up connectivity, and that between amygdala and subgenual anterior cingulate cortex exhibited top-down connectivity, both of which changed to bilateral directions, i.e. both bottom-up and top-down connections, in both young adults and adults, supporting the notion that the amygdala and prefrontal cortical circuitries undergo functional reorganizations during brain development. These novel findings have important clinical implications in treating stress-related affective disorders in young individuals.
URI: http://hdl.handle.net/10397/80042
EISSN: 2213-1582
DOI: 10.1016/j.nicl.2018.07.022
Rights: © 2018 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/)
The following publication Wu, J., Geng, X., Shao, R., Wong, N. M. L., Tao, J., Chen, L., . . . & Lee, T. M. C. (2018). Neurodevelopmental changes in the relationship between stress perception and prefrontal-amygdala functional circuitry. NeuroImage: Clinical, 20, 267-274 is available at https://dx.doi.org/10.1016/j.nicl.2018.07.022
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