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Clocks & Sleep, Volume 4, Issue 1

March 2022 - 18 articles

Cover Story: With multiple tasks to complete throughout the day, it would be helpful to know the peak circadian timing for performance on each task. However, the literature on task dependence in circadian rhythms of performance is mixed. We investigated this issue by comparing three neurobehavioral tests administered every 2 hours through a 24-hour constant routine protocol, which was preceded by 3 days of either a night shift or a day shift schedule—a design that separated the homeostatic and circadian processes and exposed the endogenous circadian rhythm of neurobehavioral functioning. Accounting also for individual differences, we found that the circadian peak time did not differ significantly between tests. Thus, we found no evidence that a person’s endogenous circadian timing for optimal neurobehavioral functioning is inherently task-dependent. View this paper
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Articles (18)

  • Communication
  • Open Access
1 Citations
3,550 Views
6 Pages

Sleep Deprivation Does Not Influence Photic Resetting of Circadian Activity Rhythms in Drosophila

  • David C. Negelspach,
  • Sevag Kaladchibachi,
  • Hannah K. Dollish and
  • Fabian-Xosé Fernandez

Previous investigations in humans and rodent animal models have assessed the interplay of sleep in the circadian system’s phase responses to nighttime light exposure. The resulting data have been mixed, but generally support a modulatory role f...

  • Article
  • Open Access
5 Citations
4,191 Views
17 Pages

Circadian rhythms are self-sustained oscillators with a period of 24 h that is based on the output of transcriptional and post-translational feedback loops. Phosphorylation is considered one of the most important post-translational modifications affe...

  • Article
  • Open Access
6 Citations
3,463 Views
13 Pages

Several studies have reported that the COVID-19 pandemic has had deleterious effects on sleep quality and mood, but the mechanisms underlying these effects are not clearly understood. Recently, it has been shown that the acceptance component of mindf...

  • Article
  • Open Access
7 Citations
5,870 Views
12 Pages

The current study investigates the impact of sleep loss on neurobehavioral functioning and sleepiness in a natural setting among healthy adolescents. Fifty-nine adolescents (32 females) from grades 7 to 12 (mean age of 16.29 ± 1.86 years) part...

  • Article
  • Open Access
5 Citations
4,443 Views
15 Pages

Sedative–Hypnotic Activity of the Water Extracts of Coptidis Rhizoma in Rodents

  • Hye-Young Joung,
  • Minsook Ye,
  • Miyoung Lee,
  • Yunki Hong,
  • Minji Kim,
  • Kyung Soo Kim and
  • Insop Shim

Many medicinal plants have been used in Asia for treating a variety of mental diseases, including insomnia and depression. However, their sedative–hypnotic effects and mechanisms have not been clarified yet. Accordingly, the objective of this s...

  • Article
  • Open Access
5 Citations
4,419 Views
16 Pages

Objective: This study evaluated the effectiveness of a parent-focused intervention aimed at the promotion of healthy sleep patterns and controlled exposure to electronic media (EM) in young adolescents. Participants: The sample included 70 dyads of p...

  • Article
  • Open Access
3 Citations
4,235 Views
15 Pages

Circadian and Sleep Modulation of Dreaming in Women with Major Depression

  • Angelina Birchler-Pedross,
  • Sylvia Frey,
  • Christian Cajochen and
  • Sarah L. Chellappa

28 February 2022

Growing evidence indicates an association between reduced dream recall and depressive symptomatology. Here, we tested the prediction that reduced dream recall in individuals experiencing major depressive disorder (MDD) is due to alterations in circad...

  • Article
  • Open Access
11 Citations
5,313 Views
14 Pages

Obesity, Sex, Snoring and Severity of OSA in a First Nation Community in Saskatchewan, Canada

  • James A. Dosman,
  • Chandima P. Karunanayake,
  • Mark Fenton,
  • Vivian R. Ramsden,
  • Jeremy Seeseequasis,
  • Robert Skomro,
  • Shelley Kirychuk,
  • Donna C. Rennie,
  • Kathleen McMullin and
  • Brooke P. Russell
  • + 4 authors

24 February 2022

Sleep disorders have been related to body weight, social conditions, and a number of comorbidities. These include high blood pressure and type 2 diabetes, both of which are prevalent in the First Nations communities. We explored relationships between...

  • Article
  • Open Access
10 Citations
5,277 Views
12 Pages

Pre-Sleep Cognitive Arousal Is Negatively Associated with Sleep Misperception in Healthy Sleepers during Habitual Environmental Noise Exposure: An Actigraphy Study

  • Rachel L. Sharman,
  • Michael L. Perlis,
  • Célyne H. Bastien,
  • Nicola L. Barclay,
  • Jason G. Ellis and
  • Greg J. Elder

Specific noises (e.g., traffic or wind turbines) can disrupt sleep and potentially cause a mismatch between subjective sleep and objective sleep (i.e., “sleep misperception”). Some individuals are likely to be more vulnerable than others...

  • Review
  • Open Access
20 Citations
4,651 Views
8 Pages

Socioeconomic status (SES) has an unrecognized influence on behavioral risk factors as well as public health strategies related to sleep health disparities. In addition to that, objectively measuring SES’ influence on sleep health is challengin...

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Clocks & Sleep - ISSN 2624-5175