Are there effects of light exposure on daytime sleep for rotating shift nurses after night shift?: an EEG power analysis
IntroductionNight-shift workers often face various health issues stemming from circadian rhythm shift and the consequent poor sleep quality. We aimed to study nurses working night shifts, evaluate the electroencephalogram (EEG) pattern of daytime sleep, and explore possible pattern changes due to am...
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| Format: | Article |
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Frontiers Media S.A.
2024-03-01
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| Series: | Frontiers in Neuroscience |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnins.2024.1306070/full |
| _version_ | 1797243021369016320 |
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| author | Soonhyun Yook Su Jung Choi Cong Zang Eun Yeon Joo Hosung Kim |
| author_facet | Soonhyun Yook Su Jung Choi Cong Zang Eun Yeon Joo Hosung Kim |
| author_sort | Soonhyun Yook |
| collection | DOAJ |
| description | IntroductionNight-shift workers often face various health issues stemming from circadian rhythm shift and the consequent poor sleep quality. We aimed to study nurses working night shifts, evaluate the electroencephalogram (EEG) pattern of daytime sleep, and explore possible pattern changes due to ambient light exposure (30 lux) compared to dim conditions (<5 lux) during daytime sleep.MoethodsThe study involved 31 participants who worked night shifts and 24 healthy adults who had never worked night shifts. The sleep macro and microstructures were analyzed, and electrophysiological activity was compared (1) between nighttime sleep and daytime sleep with dim light and (2) between daytime sleep with dim and 30 lux light conditions.ResultsThe daytime sleep group showed lower slow or delta wave power during non-rapid eye movement (NREM) sleep than the nighttime sleep group. During daytime sleep, lower sigma wave power in N2 sleep was observed under light exposure compared to no light exposure. Moreover, during daytime sleep, lower slow wave power in N3 sleep in the last cycle was observed under light exposure compared to no light exposure.DiscussionOur study demonstrated that night shift work and subsequent circadian misalignment strongly affect sleep quality and decrease slow and delta wave activities in NREM sleep. We also observed that light exposure during daytime sleep could additionally decrease N2 sleep spindle activity and N3 waves in the last sleep cycle. |
| first_indexed | 2024-04-24T18:48:29Z |
| format | Article |
| id | doaj.art-63a5da176b3d47e9bcace28dcf5f83f9 |
| institution | Directory Open Access Journal |
| issn | 1662-453X |
| language | English |
| last_indexed | 2024-04-24T18:48:29Z |
| publishDate | 2024-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Neuroscience |
| spelling | doaj.art-63a5da176b3d47e9bcace28dcf5f83f92024-03-27T04:51:54ZengFrontiers Media S.A.Frontiers in Neuroscience1662-453X2024-03-011810.3389/fnins.2024.13060701306070Are there effects of light exposure on daytime sleep for rotating shift nurses after night shift?: an EEG power analysisSoonhyun Yook0Su Jung Choi1Cong Zang2Eun Yeon Joo3Hosung Kim4USC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, United StatesGraduate School of Clinical Nursing Science, Sungkyunkwan University, Seoul, Republic of KoreaUSC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, United StatesDepartment of Neurology, Neuroscience Center, Samsung Medical Center, Samsung Biomedical Research Institute, School of Medicine, Sungkyunkwan University, Seoul, Republic of KoreaUSC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, United StatesIntroductionNight-shift workers often face various health issues stemming from circadian rhythm shift and the consequent poor sleep quality. We aimed to study nurses working night shifts, evaluate the electroencephalogram (EEG) pattern of daytime sleep, and explore possible pattern changes due to ambient light exposure (30 lux) compared to dim conditions (<5 lux) during daytime sleep.MoethodsThe study involved 31 participants who worked night shifts and 24 healthy adults who had never worked night shifts. The sleep macro and microstructures were analyzed, and electrophysiological activity was compared (1) between nighttime sleep and daytime sleep with dim light and (2) between daytime sleep with dim and 30 lux light conditions.ResultsThe daytime sleep group showed lower slow or delta wave power during non-rapid eye movement (NREM) sleep than the nighttime sleep group. During daytime sleep, lower sigma wave power in N2 sleep was observed under light exposure compared to no light exposure. Moreover, during daytime sleep, lower slow wave power in N3 sleep in the last cycle was observed under light exposure compared to no light exposure.DiscussionOur study demonstrated that night shift work and subsequent circadian misalignment strongly affect sleep quality and decrease slow and delta wave activities in NREM sleep. We also observed that light exposure during daytime sleep could additionally decrease N2 sleep spindle activity and N3 waves in the last sleep cycle.https://www.frontiersin.org/articles/10.3389/fnins.2024.1306070/fullshift worksleep EEGlight exposureelectrophysiologyEEG spectral analysiscircadian misalignment |
| spellingShingle | Soonhyun Yook Su Jung Choi Cong Zang Eun Yeon Joo Hosung Kim Are there effects of light exposure on daytime sleep for rotating shift nurses after night shift?: an EEG power analysis Frontiers in Neuroscience shift work sleep EEG light exposure electrophysiology EEG spectral analysis circadian misalignment |
| title | Are there effects of light exposure on daytime sleep for rotating shift nurses after night shift?: an EEG power analysis |
| title_full | Are there effects of light exposure on daytime sleep for rotating shift nurses after night shift?: an EEG power analysis |
| title_fullStr | Are there effects of light exposure on daytime sleep for rotating shift nurses after night shift?: an EEG power analysis |
| title_full_unstemmed | Are there effects of light exposure on daytime sleep for rotating shift nurses after night shift?: an EEG power analysis |
| title_short | Are there effects of light exposure on daytime sleep for rotating shift nurses after night shift?: an EEG power analysis |
| title_sort | are there effects of light exposure on daytime sleep for rotating shift nurses after night shift an eeg power analysis |
| topic | shift work sleep EEG light exposure electrophysiology EEG spectral analysis circadian misalignment |
| url | https://www.frontiersin.org/articles/10.3389/fnins.2024.1306070/full |
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