Late bedtime is associated with decreased hippocampal volume in young healthy subjects

Kuperczkó, Diána; Perlaki, Gábor; Faludi, Béla; Orsi, G.; Altbäcker, Anna; Kovács, Norbert; Dóczi, Tamás; Komoly, Sámuel; Schwarcz, Attila; Clemens, Zsófia; Janszky, József

doi:10.1111/sbr.12077

Cited by 13 publications

(9 citation statements)

References 33 publications

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“…This disturbance may eventually lead towards insomnia following the average score in sleep quality, by considering the symptoms such as difficulty in initiating sleep, awakening during sleep, not feeling well rested after sleep, daytime sleepiness and impaired functions [16], as experienced by the devices user. Indeed, it has been proven that the sleep quality is important in determining the hippocampus volume [17], however, was not conclusive to an increased risk of ganglio meningioma [18]. Moreover, our present study also showed that insomnia was not associated with illness in the past 6 months as reported by the respondents.…”

Section: Discussionsupporting

confidence: 44%

Sleep pattern among electronic device users and its relationship with users’ practice in Malaysia university community

Lee

Low

2016

Sleep Biol. Rhythms

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A cross-sectional study on the different health effects following the usage of electronic devices among the university community residing in Selangor, Malaysia was carried out using an online self-administered questionnaire. The results showed the cumulative hours spent by respondents (n = 304) on mobile phone, laptop, tablet and portable game console was 8.3 per day. The incidences of eye strain, memory lapse, fatigue, neck pain and back pain were reported. Bivariate analysis showed that these musculoskeletal problems were not associated with the rest interval while using the devices. The average 6.9 h of sleep per day and average 3.3 (0-6) in rating their sleep quality was recorded. The rate on sleep quality was significantly positive correlated (p \ 0.013) with sleep hours but negatively correlated (p \ 0.026) with hours spent on devices. Furthermore, respondents who left electronic device in switch-on mode while sleeping and kept in dormitory had poorer sleep quality compared to those who switched off. Insomnia symptoms were encountered among the respondents in regard to poor sleep quality, behaviours including leaving electronic device in switch-on mode while sleeping and use of the devices before sleep. Hence, it is advisable to reduce the electronic devices usage to enjoy better sleep quality.

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Section: Discussionsupporting

confidence: 44%

Sleep pattern among electronic device users and its relationship with users’ practice in Malaysia university community

Lee

Low

2016

Sleep Biol. Rhythms

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“…Studies show that even one night of many nighttime wakings is associated with poorer performance on sustained attention and working memory tasks the next day [ 27 ]. Later sleep timing [which is more common among those experiencing daily stress; 28 ] may have associations with poorer memory performance, in part through covarying morphological changes in the hippocampus [ 29 ]. Thus, research suggests that multiple aspects of sleep [e.g., timing, duration, consistency, wakings/activity] should be considered, when examining sleep problems as they relate to stress and cognition.…”

Section: Introductionmentioning

confidence: 99%

Mothers’ sleep deficits and cognitive performance: Moderation by stress and age

et al. 2021

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There are well-known associations between stress, poor sleep, and cognitive deficits, but little is known about their interactive effects, which the present study explored in a sample of mothers of toddlers. Since certain types of cognitive decline start during the 20s and continue into later ages, we also explored whether mothers’ age interacted with stress and sleep in the prediction of cognitive functioning. We hypothesized that poorer sleep [measured using one week of 24-hour wrist actigraphy data] and having more chronic stressors [e.g., life events, household chaos, work/family role conflict] would be linked with poorer cognitive performance [both executive function and standardized cognitive ability tasks], and that the interactive combination of poorer sleep and more stressors would account for the effect. We also explored whether this process operated differently for younger versus older women. In a socioeconomically and geographically diverse community sample of 227 women with toddler-age children [age, M = 32.73 yrs, SD = 5.15 yrs], poorer cognitive performance was predicted by greater activity during the sleep period, shorter sleep duration, and lower night-to-night consistency in sleep; it was not associated with higher levels of stress. The interactive effects hypothesis was supported for sleep activity [fragmented sleep] and sleep timing [when mothers went to bed]. The combination of more exposure to stressors and frequent night waking was particularly deleterious for older women’s performance. For younger women, going to bed late was associated with poorer performance if they were experiencing high levels of stress; for those experiencing low levels of stress, going to bed late was associated with better performance.

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“…Individuals with eveningness preference showed alterations in the structure and metabolism of a neural circuitry that was critical for accurate affective responses and emotional regulation ( Hasler et al., 2012 ; Kuperczkó et al., 2015 ; Rosenberg, Maximov, Reske, Grinberg, & Shah, 2014 ). As the relationship between eveningness and emotional dysregulation seems to be at least partly mediated by sleep complaints ( Levandovski et al., 2011 ; Rosenberg et al., 2014 ; Simor, Zavecz, et al., 2015 ), treatments focusing on circadian rhythms and sleep quality might be beneficial for patients with OCD.…”

Section: Discussionmentioning

confidence: 99%

Eveningness is associated with poor sleep quality and negative affect in obsessive–compulsive disorder

et al. 2018

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BackgroundObsessive–compulsive disorder (OCD) is characterized by intrusive thoughts and repetitive behaviors that severely encumber daily functioning. OCD patients seem to exhibit sleep disturbances, especially delayed bedtimes that reflect disrupted circadian rhythmicity. Morningness–eveningness is a fundamental factor reflecting individual variations in diurnal preferences related to sleep and waking activities. Eveningness reflecting a delayed sleep–wake timing has repeatedly been associated with sleep problems and negative affect (NA). Therefore, the aim of this study was to examine the associations between morningness–eveningness, sleep complaints, and symptom severity in OCD patients and compared with a mixed psychiatric control group.Materials and methodsThe data of 49 OCD and 49 mixed psychiatric inpatients (with unipolar depression and anxiety disorders) were analyzed. Patients completed questionnaires regarding morningness–eveningness, sleep quality, nightmare frequency, depression, anxiety, and affective states. Obsessive and compulsive symptom severity was also assessed within the OCD group by clinician-rated scales.ResultsEveningness preference was associated with impaired sleep quality and higher NA in OCD patients. In addition, impaired sleep quality showed a moderate correlation with anxiety and strong correlations with depressive symptoms and NA. Interestingly, in the mixed psychiatric group, eveningness was not linked to NA, and sleep quality also showed weaker associations with depressive symptoms and NA. Within the OCD group, eveningness preference was predictive of poorer sleep quality regardless the influence of depressive symptoms.ConclusionOur findings suggest that eveningness and sleep complaints are predictive of affective dysfunctions, and should be carefully considered in the evaluation and treatment of OCD patients.

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Late bedtime is associated with decreased hippocampal volume in young healthy subjects

Cited by 13 publications

References 33 publications

Sleep pattern among electronic device users and its relationship with users’ practice in Malaysia university community

Sleep pattern among electronic device users and its relationship with users’ practice in Malaysia university community

Mothers’ sleep deficits and cognitive performance: Moderation by stress and age

Eveningness is associated with poor sleep quality and negative affect in obsessive–compulsive disorder

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