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Personal profile


Career to Date

Dr Tracey Sletten completed her PhD at the University of South Australia examining the effects of shift work and fatigue in the field operations of aviation and rail. Her primary research incorporated large-scale investigations of the sleep/wake behaviour and occupational fatigue of several hundred commercial flight crew working long-haul flight patterns from Australia. Further to research, Dr Sletten held a consultative role, conducting training and education, analysing work shifts and conducting fatigue assessments for numerous transportation and emergency services operations within Australia and internationally.

Between 2005 and 2008 Dr Sletten held a post-doctoral position with the Centre for Chronobiology at the University of Surrey (United Kingdom) where some of the groundbreaking work in circadian photoreception has been conducted. She examined the effectiveness of different wavelengths of light to improve alertness and mood and shift the phase of human circadian rhythms. During this period Dr Sletten was also a Visiting Fellow in Chronobiology and Sleep Research at the Department of Pharmacology and Toxicology, University of Zurich, Switzerland. Dr Sletten has also held a Research Fellow position with the Division of Sleep Medicine, Brigham and Women’s Hospital and Harvard Medical School in Boston.

Dr Sletten was the former Chair of the European Sleep Research Society Forum for Women in Sleep Research and is the current co-chair of the Australasian Sleep Association Chronobiology Special Interest Group.

Research Focus

Dr Sletten’s current research focus at Monash University is in the role of sleep and the circadian system on waking function. Core topics include the impact of sleep loss and circadian misalignment on sleepiness and neurobehavioural performance, phenotyping and treatment of circadian rhythm sleep disorders, impairments associated with shiftwork and numerous applications of lighting to enhance alertness. Dr Sletten is conducting large-scale field assessments of sleep, circadian phase, cognitive functioning and psychological health in expeditioners over-wintering in Antarctica.

Honours and Distinctions

2012 – Australasian Sleep Association Helen Bearpark Scholarship for Visiting Fellow position at Brigham & Women’s Hospital and Harvard Medical School, Boston.


  • Sleep
  • Sleep loss
  • Sleep deprivation
  • Circadian rhythms
  • Light
  • Shift work
  • Fatigue
  • Sleep disorders

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Projects 2009 2019

Research Output 2003 2018

Chronotype and environmental light exposure in a student population

Porcheret, K., Wald, L., Fritschi, L., Gerkema, M., Gordijn, M., Merrrow, M., Rajaratnam, S. M. W., Rock, D., Sletten, T. L., Warman, G., Wulff, K., Roenneberg, T. & Foster, R. G., 15 Jun 2018, (Accepted/In press) In : Chronobiology International. 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access

Does modifying the timing of meal intake improve cardiovascular risk factors? Protocol of an Australian pilot intervention in night shift workers with abdominal obesity

Bonham, M. P., Leung, G. K. W., Davis, R., Sletten, T. L., Murgia, C., Young, M. J., Eikelis, N., Lambert, E. A. & Huggins, C. E., 1 Mar 2018, In : BMJ Open. 8, 3, e020396.

Research output: Contribution to journalArticleResearchpeer-review

Open Access

Efficacy of melatonin for sleep disturbance following traumatic brain injury: A randomised controlled trial

Grima, N. A., Rajaratnam, S. M. W., Mansfield, D., Sletten, T. L., Spitz, G. & Ponsford, J. L., 19 Jan 2018, In : BMC Medicine. 16, 1, 10 p., 8.

Research output: Contribution to journalArticleResearchpeer-review

Open Access

Efficacy of melatonin with behavioural sleep-wake scheduling for delayed sleep-wake phase disorder: A double-blind, randomised clinical trial

Sletten, T. L., Magee, M., Murray, J. M., Gordon, C. J., Lovato, N., Kennaway, D. J., Gwini, S. M., Bartlett, D. J., Lockley, S. W., Lack, L. C., Grunstein, R. R., Rajaratnam, S. M. W. & for the Delayed Sleep on Melatonin (DelSoM) Study Group, 18 Jun 2018, In : PLoS Medicine. 15, 6, 24 p., e1002587.

Research output: Contribution to journalArticleResearchpeer-review

Open Access

Individual vulnerability to insomnia, excessive sleepiness and shift work disorder amongst healthcare shift workers. A systematic review

Booker, L. A., Magee, M., Rajaratnam, S. M. W., Sletten, T. L. & Howard, M. E., 2018, (Accepted/In press) In : Sleep Medicine Reviews.

Research output: Contribution to journalArticleResearchpeer-review