Associations between sleep patterns, circadian preference, and anxiety and depression: A two-year prospective study among Norwegian adolescents

Evanger LN, Saxvig IW, Pallesen S, Gradisar M, Lie SA, Bjorvatn B. Published in Clocks & Sleep

Snooze alarm use in a global population of smartphone users.

Robbins R, Sääf D, Weaver MD, Gradisar M, Quan SF, Czeisler CA.Published in Scientific Reports

Group bright light therapy compared to treatment as usual for delayed sleep-wake phase disorder among patients in psychiatric care (the SIP trials): A protocol for a pragmatic, randomised controlled trial

Wilhemlsen-Langeland A, Osnes B, Gradisar M, Vågenes VA, Sørensen L, Bjorvatn B, Fasmer OB, Koenig J, Pallesen S, Saxvig IW.Published in BMJ Open

Group cognitive behavioural therapy for insomnia compared with treatment as usual for sleep problems in psychiatric care (the SP trials): A protocol for a pragmatic, randomised trial

Wilhemsen-Langeland A, Saxvig IW, Gradisar M, Vågenes VA, Pallesen S, Sørensen L, Fasmer OB, Koenig J, Bjorvatn B, Osnes.Published in BMJ Open

How and when screens are used: Comparing different screen activities and sleep in Norwegian university students

Hjetland GJ, Skogen JC, Hysing M, Gradisar M, Sivertsen B.Published in Frontiers in Psychiatry

Insomnia in adolescent epidemiological studies: To what extent can the symptoms be explained by circadian factors?

Arnesen IB, Bjorvatn B, Pallesen S, Waage S, Gradisar M, Wilhelmsen-Langeland A, & Saxvig I.Published in Chronobiology International

Sleep trajectories and frequency of non-suicidal self-injury in adolescents: A person-oriented perspective over two years

Bauducco SV, Tilton-Weaver L, Gradisar M, Hysing M, & Latina D.Published in Scientific Reports

The difficult but crucial task of knowledge translation: The case of pre-sleep technology use. Reply to Reichenberger et al. and the National Sleep Foundation’s screen use recommendations

Bauducco S, Pillion M, Bartel K, Reynolds C, Kahn M, & Gradisar M.Published in Sleep Medicine Reviews

Sleepless on the road: Are mothers of infants with insomnia at risk for impaired driving?

Kahn M, Irwin C, Pillion M, Whittall H, Fitton J, Sprajcer M, & Gradisar M. Published in Journal of Sleep Research

International consensus on sleep problems in pediatric palliative care: Paving the way

Mercante A, Owens J, Bruni O, Nunes ML, Gringras P, Li SX, Papa S, Kreicbergs U, Wolfe J, Zernikow B, Lacerda A, Benini F and the Pediatric Sleep and Palliative Care Group. Published in Sleep Medicine

Adolescents’ trajectories of depression and anxiety symptoms prior to and during the COVID-19 pandemic and their association with healthy sleep patterns

Bauducco S, Gardner LA, Smout S, Champion KE, Chapman C, Gamble A, Teesson M, Gradisar M, & Newton NC. Published in Scientific Reports

Sleepy and popular? The association between popularity, sleep duration and insomnia in adolescents

Bauducco S, Boersma K, & Gradisar M.Published in Frontiers in Sleep

A bidirectional model of sleep and technology use: A theoretical review of how much for whom, and which mechanisms

Bauducco S, Pillion M, Bartel K, Reynolds C, Kahn M, & Gradisar M.Published in Sleep Medicine Reviews

Effects of cognitive behavioural therapy and bright light therapy for insomnia in youths with eveningness: Study protocol for a randomised controlled trial

Li SX, Cheung FTW, Chan NY, Chan JWY, Zhang J, Li AM, Espie CA, Gradisar M, Wing YK.Published in Trials

It’s past your bedtime, but does it matter anymore? How longitudinal changes in bedtime rules relate to adolescents’ sleep

Bauducco SV, Gardner LA, Champion K, Newton N, & Gradisar M.Published in Journal of Sleep Research

The sleep, anxiety, mood, and cognitive performance of Oceanic Rocket League esports athletes competing in a multiday regional event

Bonnar D, Gradisar M, Kahn M, & Richardson C. Published in Journal of Electronic Gaming and Esports

Development of evening sleep homeostatic pressure in early adolescents

Reynolds CM, Short MA, Kahn M, Richardson C, Heath M, Whittall H, Lack L, & Gradisar M. Published in Sleep Medicine

Behavioral infant sleep interventions: Helping parents and clinicians make scientifically informed decisions

Kahn M, Barnett N, & Gradisar N.Published in The Journal of Pediatrics

Validation of the Parental Understanding and Misperceptions about Baby’s Sleep Questionnaire using auto-videosomnography

Jang E, Kang S, Bei B, Ching S, Gradisar M, Kahn M, Barnett N, Suh S.Published in The Journal of Child Psychology and Psychiatry

Pediatric sleep: Current knowledge, gaps, and opportunities for the future

Reynolds, AM, Spaeth AM, Hale L, Williamson AA, LeBourgeois MK, Wong SD, Hartstein LE, Levenson JC, Kwon M, Hart CN, Greer A, Richardson CE, Gradisar M, Clementi MA, Simon SL, Reuter-Yuill LM, Picchietti DL, Wild S, Tarokh L, Sexton-Radek K, Malow, BA, Lenker KP, Calhoun SL, Johnson DA, Lewin D, & Carskadon MA. Published in Sleep

Implementation of behavioral interventions for infant sleep problems in real-world settings

Kahn M, Barnett N, & Gradisar M.Published in The Journal of Pediatrics

Technology use as a sleep-onset aid: Are adolescents using apps to distract themselves from negative thoughts?

Daniels A, Pillion M, Rullo B, Mikulcic J, Whittall H, Bartel K, Kahn M, Gradisar M, & Bauducco SV. Published in Sleep Advances

WiFi off, devices out: Do parent-set technology rules play a role in adolescent sleep

Pillion M, Gradisar M, Bartel K, Whittall H, Mikulcic J, Daniel A, Rullo B, & Kahn M. Published in Sleep Medicine X

Sleep’s role in the development and resolution of adolescent depression

Gradisar M, Kahn M, Micic G, Short M, Reynolds C, Orchard F, Bauducco S, Bartel K, & Richardson C. Published in Nature Reviews Psychology

Electric lighting, adolescent sleep and circadian outcomes, and recommendations for improving light health

Ricketts EJ, Joyce DS, Rissman AJ, Burgess HJ, Colwell CS, Lack LC, Gradisar M. (2022). Published in Sleep Medicine Reviews

Trajectories of insomnia symptoms and insufficient sleep duration in early adolescents: Associations with school stress

Bauducco SV, Özdemir M, Gradisar M, Boersma K, & Bayram-Özdemir S. (2022). Published in Sleep Advances

Low-intensity scheduled morning exercise for adolescents with a late chronotype: A novel treatment to advance circadian phase?

Lang C, Richardson C, Short MA, & Gradisar M.Published in Sleep Advances

Science and Research

Sleep Cycle is born from a team of visionaries and builders, blending technology and science to create something remarkable.

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Meet Some of Our Experts

Our expert panel brings together leading minds in sleep science and technology, giving Sleep Cycle a unique and innovative foundation.

Dr. Mikael Kågebäck

Holds a Ph.D. in Machine Learning and AI from Chalmers University of Technology in Gothenburg and leads the technical direction at Sleep Cycle.

Dr. Mike Gradisar

A Clinical Psychologist, research scientist, and internationally recognized sleep expert with over two decades of experience in sleep research and therapy.

Dr. Emil Carlsson

A research scientist specializing in reinforcement learning and decision-making under uncertainty with a focus on developing reliable data-driven decision-making systems.

Emilio Jorge

Holds a Licentiate degree in Machine Learning and AI from Chalmers University of Technology in Gothenburg, with a strong foundation in mathematics.

A Trusted Research Partner

With millions of daily active users and over three billion nights analyzed across more than 150 countries, Sleep Cycle is the leading sleep-tracking application and one of the most widely used solutions worldwide for improving sleep health.

We frequently collaborate with some of the world’s leading universities to support global sleep health.