Abstract:
Background:Most children who are exposed to threat-related adversity (e.g., violence, abuse, neglect) are resilient - that is, they show stable trajectories of healthy psychological development. Despite this, most research on neurodevelopmental changes following adversity has focused on the neural correlates of negative outcomes, such as psychopathology. The neural correlates of trait resilience in pediatric populations are unknown, and it is unclear whether they are distinct from those related to adversity exposure and the absence of negative outcomes (e.g., depressive symptomology). Methods:This functional magnetic resonance imaging (fMRI) study reports on a diverse sample of 55 children and adolescents (ages 6-17 years) recruited from a range of stressful environments (e.g., lower income, threat-related adversity exposure). Participants completed a multi-echo multi-band resting-state fMRI scan and self-report measures of trait resilience and emotion-related symptomology (e.g., depressive symptoms). Resting-state data were submitted to an independent component analysis (ICA) to identify core neurocognitive networks (salience and emotion network [SEN], default mode network [DMN], central executive network [CEN]). We tested for links among trait resilience and dynamic (i.e., time-varying) as well as conventional static (i.e., averaged across the entire session) resting-state functional connectivity (rsFC) of core neurocognitive networks. Results:Youth with higher trait resilience spent a lower fraction of time in a particular dynamic rsFC state, characterized by heightened rsFC between the anterior DMN and right CEN. Within this state, trait resilience was associated with lower rsFC of the SEN with the right CEN and anterior DMN. There were no associations among trait resilience and conventional static rsFC. Importantly, although more resilient youth reported lower depressive symptoms, the effects of resilience on rsFC were independent of depressive symptoms and adversity exposure. Conclusions:The present study is the first to report on the neural correlates of trait resilience in youth, and offers initial insight into potential adaptive patterns of brain organization in the context of environmental stressors. Understanding the neural dynamics underlying positive adaptation to early adversity will aid in the development of interventions that focus on strengthening resilience rather than mitigating already-present psychological problems.
journal_name
Neuroimage Clinjournal_title
NeuroImage. Clinicalauthors
Iadipaolo AS,Marusak HA,Paulisin SM,Sala-Hamrick K,Crespo LM,Elrahal F,Peters C,Brown S,Rabinak CAdoi
10.1016/j.nicl.2018.06.026subject
Has Abstractpub_date
2018-06-27 00:00:00pages
24-34issn
2213-1582pii
S2213-1582(18)30209-2journal_volume
20pub_type
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journal_title:NeuroImage. Clinical
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journal_title:NeuroImage. Clinical
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journal_title:NeuroImage. Clinical
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pub_type: 杂志文章
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journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2017.06.031
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journal_title:NeuroImage. Clinical
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journal_title:NeuroImage. Clinical
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