Publikation:

Polysomnographic Sleep and Attentional Deficits in Traumatized North Korean Refugees

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2021

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Lee, Jooyoung
Jeon, Sehyun
Kim, Somin
Seo, Yumin
Lee, Yu Jin
Kim, Seog Ju

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Nature and Science of Sleep. Dove Medical Press. 2021, 13, pp. 635-645. eISSN 1179-1608. Available under: doi: 10.2147/NSS.S308968

Zusammenfassung

Introduction: Attentional deficits and sleep problems are common in refugees who have experienced trauma. In the present study, we used polysomnography (PSG) to investigate the relationship between attentional deficits and objective measures of sleep structure in traumatized North Korean refugees.
Methods: We recruited 32 North Korean refugees (mean age = 33.78 ± 14.33 years) and 39 South Korean participants (mean age = 35.03 ± 11.08 years). Sustained attention and divided attention were assessed using the Computerized Attention Test. We conducted an overnight PSG to objectively assess sleep structure. The participants also completed the Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), Impact of Event Scale-Revised (IES-R), Epworth Sleepiness Scale (ESS), Pittsburgh Sleep Quality Index (PSQI), and Insomnia Severity Index (ISI).
Results: The North Korean refugees showed more commission errors (CEs, p < 0.05) and a larger standard deviation (SD) of the reaction time (RT) (p < 0.05) in the sustained attention task compared to the South Korean participants. Furthermore, the North Korean refugees showed a shorter period of wake after sleep onset (WASO, p < 0.01), less time spent in N1 (p < 0.05), and more time spent in N2 (p < 0.05). The larger SD of RT in the sustained attention task in the North Korean refugees was positively correlated with WASO (r = 0.62, p < 0.01) and N1 stage (r = 0.47, p < 0.05) after controlling for age, sex, BDI, BAI, and IES-R.
Conclusion: The North Korean refugees showed poorer performance on the sustained attention task. Nocturnal PSG revealed shorter WASO and time spent in N1 in this population, which are independently associated with the preservation of attentional capacity. These data suggest that traumatized refugees may compensate for attentional deficits induced by their traumatic experiences via increased sleep continuity.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
150 Psychologie

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attention, sleep, trauma, North Korean refugees

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ISO 690LEE, Jooyoung, Sehyun JEON, Somin KIM, Yumin SEO, Jinme PARK, Yu Jin LEE, Seog Ju KIM, 2021. Polysomnographic Sleep and Attentional Deficits in Traumatized North Korean Refugees. In: Nature and Science of Sleep. Dove Medical Press. 2021, 13, pp. 635-645. eISSN 1179-1608. Available under: doi: 10.2147/NSS.S308968
BibTex
@article{Lee2021Polys-54062,
  year={2021},
  doi={10.2147/NSS.S308968},
  title={Polysomnographic Sleep and Attentional Deficits in Traumatized North Korean Refugees},
  volume={13},
  journal={Nature and Science of Sleep},
  pages={635--645},
  author={Lee, Jooyoung and Jeon, Sehyun and Kim, Somin and Seo, Yumin and Park, Jinme and Lee, Yu Jin and Kim, Seog Ju}
}
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