期刊
NEUROBIOLOGY OF STRESS
卷 15, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ynstr.2021.100377
关键词
Coronavirus disease 19 (COVID-19); Post-traumatic stress symptoms (PTSS); Functional magnetic resonance imaging (fMRI); Dynamic functional network connectivity (dFNC); Mental health
资金
- National Natural Science Foundation of China [31822025, 32071061]
- Scientific Foundation of Institute of Psychology, Chinese Academy of Sciences [E0CX521003]
- Medical Science and Technology Youth Cultivation Project of PLA [21QNPY061]
- National Institutes of Health (NIH) [R01EB006841, R01EB020407, P20GM103472]
The accumulating evidence suggests that COVID-19 survivors may experience prolonged mental issues, especially post-traumatic stress symptoms (PTSS). While previous studies have shown intact static brain functional networks in COVID-19 survivors, dynamic functional networks could reveal important brain abnormalities. COVID-19 survivors exhibit increased occurrence of a dynamic functional network connectivity state with heterogeneous patterns, significantly correlated with the severity of PTSS. The altered temporal characteristics of functional networks in COVID-19 survivors highlight the importance of evaluating dynamic functional network changes.
Accumulating evidence shows that Coronavirus Disease 19 (COVID-19) survivors may encounter prolonged mental issues, especially post-traumatic stress symptoms (PTSS). Despite manifesting a plethora of behavioral or mental issues in COVID-19 survivors, previous studies illustrated that static brain functional networks of these survivors remain intact. The insignificant results could be due to the conventional statistic network analysis was unable to reveal information that can vary considerably in different temporal scales. In contrast, time-varying characteristics of the dynamic functional networks may help reveal important brain abnormalities in COVID19 survivors. To test this hypothesis, we assessed PTSS and collected functional magnetic resonance imaging (fMRI) with COVID-19 survivors discharged from hospitals and matched controls. Results showed that COVID-19 survivors self-reported a significantly higher PTSS than controls. Tapping into the moment-to-moment variations of the fMRI data, we captured the dynamic functional network connectivity (dFNC) states, and three discriminative reoccurring brain dFNC states were identified. First of all, COVID-19 survivors showed an increased occurrence of a dFNC state with heterogeneous patterns between sensorimotor and visual networks. More importantly, the occurrence rate of this state was significantly correlated with the severity of PTSS. Finally, COVID-19 survivors demonstrated decreased topological organizations in this dFNC state than controls, including the node strength, degree, and local efficiency of the supplementary motor area. To conclude, our findings revealed the altered temporal characteristics of functional networks and their associations with PTSS due to COVID-19. The current results highlight the importance of evaluating dynamic functional network changes with COVID-19 survivors.
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