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标题：Circadian influence on intrusive re-experiencing in trauma survivors’ daily lives
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作者：Alex Rosi-Andersen ; Laura Meister ; Belinda Graham 等
期刊名称：European Journal of Psychotraumatology
印刷版ISSN：2000-8198
电子版ISSN：2000-8066
出版年度：2022
卷号：13
期号：1
页码：1-11
DOI：10.1080/20008198.2021.1899617
语种：English
出版社：Taylor & Francis Group
摘要：The core clinical feature of posttraumatic stress disorder (PTSD) is recurrent reexperiencing in form of intrusive memories. While a great number of biological processes are regulated by sleep and internal biological clocks, the effect of 24-hour biological cycles, named circadian rhythm, has not been investigated in the context of intrusive memories. Here we examined effects of time of day on frequency and characteristics of intrusive re-experiencing. Methods: Fifty trauma survivors reported intrusive memories for 7 consecutive days using ecological momentary assessment in their daily life. We investigated (i) time-of-day dependent effects on frequency and distribution of intrusive re-experiencing in the overall sample as well as in PTSD versus non-PTSD and (ii) time-of-day dependent effects on the memory characteristics intrusiveness, vividness, nowness and fear. Results: Intrusive memories showed a curvilinear pattern that peaked at 2pm. Intrusive memories in the PTSD group showed a constant level of intrusive re-experiencing in the afternoon and evening, whereas a descending slope was present in the non-PTSD group. In PTSD, intrusive memories might thus be experienced in a more time-scattered fashion throughout the day, indicating chronodisruption. Intrusion characteristics did not follow this pattern. Conclusion: Although preliminary and based on a small sample size, these findings contribute to a better understanding of the everyday occurrence and characteristics of intrusive memories, and point to the added value of examining time-dependent effects, which can directly inform prevention and intervention science.
关键词：Posttraumatic stress disorder;ecological momentary assessment;intrusive re-experiencing;circadian;trauma memory;chronobiology;rhythm dysregulation