npj Biological Timing and Sleep

Featured

Conserved eukaryotic factors XCT and COP1 work together to control circadian clock function and reproductive timing in plants

Roderick W. Kumimoto
Carine M. Marshall
Stacey L. Harmer
ArticleOpen Access09 Jan 2026
Disordered descent into sleep: microstructural divergence across arousal-linked conditions

Nazanin Biabani
Adam Birdseye
Ivana Rosenzweig
Brief CommunicationOpen Access26 Feb 2026
Chronic sleep restriction activates complement and coagulation cascades: a molecular link to accelerated brain aging

Pawan K. Jha
Utham K. Valekunja
Akhilesh B. Reddy
ArticleOpen Access27 Jan 2026
Motivation meets sleep: tuning arousal via nucleus accumbens and Basal Ganglia circuits

Fares J. P. Sayegh
Patricia Bonnavion
ReviewOpen Access08 Dec 2025

Announcements

Aims & Scope

npj Biological Timing and Sleep considers research that explores all aspects of sleep, circadian and other biological rhythms.
npj Biological Timing and Sleep is in PubMed Central

We are excited to share that npj Biological Timing and Sleep is now fully indexed in PubMed Central! All articles will be automatically deposited in PubMed Central upon publication.
Exercise, Eat, Sleep, Repeat

This collection on daily rhythms and energy metabolism invites research integrating the disciplines of sleep and circadian biology with exercise physiology.

Open for submissions
npj Biological Timing & Sleep Best Poster Prize at EBRS

Congratulations to Tjale Schütz (University of Lübeck) for winning the npj Biological Timing and Sleep Best Poster Prize at the XVIII Congress of the European Biological Rhythms Society (EBRS, August 2025). Tjale's poster was titled 'Circadian rhythms in human epicardial adipose tissue'.

Browse articles

Field assessment of melatonin timing reveals circadian misalignment beyond chronotype in elite female football players

Cátia Reis
Rita Tomás
João Brito
ArticleOpen Access01 Apr 2026
Timed exercise modulates inter-coupling strength between evening and morning oscillators in mice

Nagomi Miyagi
Noriko Matsuura
Yujiro Yamanaka
ArticleOpen Access27 Mar 2026
Psychometric properties of the two-item Pittsburgh Sleep Quality Index (PSQI-2) in a cohort of community-dwelling older men: the MrOS sleep study

Luiz Menezes-Júnior
ArticleOpen Access09 Mar 2026
Auxiliary data, quality assurance and quality control for wearable light loggers and optical radiation dosimeters

Johannes Zauner
Oliver Stefani
Manuel Spitschan
ArticleOpen Access09 Mar 2026
Tracing infant sleep neurophysiology longitudinally from 3 to 6 months: EEG insights into brain development

Matthieu Beaugrand
Valeria Jaramillo
Salome Kurth
ArticleOpen Access03 Mar 2026
Disordered descent into sleep: microstructural divergence across arousal-linked conditions

Nazanin Biabani
Adam Birdseye
Ivana Rosenzweig
Brief CommunicationOpen Access26 Feb 2026
Control vs. salience: a new axis of circadian brain-body organization

Olivier Demers
Sanaz Ghaffari
Russell Butler
ArticleOpen Access16 Feb 2026
Glucocorticoid-dependence and independence of the circadian liver transcriptome

Robert J. Maidstone
A. Louise Hunter
David W. Ray
ArticleOpen Access02 Feb 2026
Naturalistic light exposure patterns in relation to medication status, mood symptoms, and chronotype

Rebecca J. Fitton
Julia E. Stone
Elise M. McGlashan
ArticleOpen Access02 Feb 2026

Glucocorticoid-dependence and independence of the circadian liver transcriptome

Featured

Conserved eukaryotic factors XCT and COP1 work together to control circadian clock function and reproductive timing in plants

Disordered descent into sleep: microstructural divergence across arousal-linked conditions

Chronic sleep restriction activates complement and coagulation cascades: a molecular link to accelerated brain aging

Motivation meets sleep: tuning arousal via nucleus accumbens and Basal Ganglia circuits

Announcements

Aims & Scope

npj Biological Timing and Sleep is in PubMed Central

Exercise, Eat, Sleep, Repeat

npj Biological Timing & Sleep Best Poster Prize at EBRS

Browse articles

Field assessment of melatonin timing reveals circadian misalignment beyond chronotype in elite female football players

Timed exercise modulates inter-coupling strength between evening and morning oscillators in mice

Psychometric properties of the two-item Pittsburgh Sleep Quality Index (PSQI-2) in a cohort of community-dwelling older men: the MrOS sleep study

Auxiliary data, quality assurance and quality control for wearable light loggers and optical radiation dosimeters

Tracing infant sleep neurophysiology longitudinally from 3 to 6 months: EEG insights into brain development

Disordered descent into sleep: microstructural divergence across arousal-linked conditions

Control vs. salience: a new axis of circadian brain-body organization

Glucocorticoid-dependence and independence of the circadian liver transcriptome

Naturalistic light exposure patterns in relation to medication status, mood symptoms, and chronotype

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Featured

Announcements

npj Biological Timing & Sleep Best Poster Prize at EBRS

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Trending - Altmetric

The impact of exercise on sleep and sleep disorders

The complexity and commonness of the two-process model of sleep regulation from a mathematical perspective

Tracing infant sleep neurophysiology longitudinally from 3 to 6 months: EEG insights into brain development

Naturalistic light exposure patterns in relation to medication status, mood symptoms, and chronotype

Search

Quick links