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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 2022

Sleep Companion Consumer Entry Decision Tree and CRC Sleep Health Management Decision Support System – Phase 4

McEvoy, R. D., Sletten, T., Lovato, N., Vakulin, A., Catcheside, P., Wallace, A., Reynolds, K. J., Randhawa, S., Gardener-Stephen, P., Lakeman, J., Stevens, D., Lack, L., O'Grady, A., Chai-Coetzer, C. L., Grunstein, R. R., Gordon, C., Ramos, F., Jefferies, B., Wilson Rajaratnam, S., Hamilton, G. & Howard, M.


Project: Research

Assessment of ocular parameters to indicate alertness

Cori, J., Rajaratnam, S. M. W., Howard, M., Anderson, C. & Sletten, T.


Project: Research

Research Output 2001 2019

Effect of Night Time Eating on Postprandial Triglyceride Metabolism in Healthy Adults: A Systematic Literature Review

Bonham, M. P., Kaias, E., Zimberg, I., Leung, G. K. W., Davis, R., Sletten, T. L., Windsor-Aubrey, H. & Huggins, C. E., 1 Apr 2019, In : Journal of Biological Rhythms. 34, 2, p. 119-130 12 p.

Research output: Contribution to journalReview ArticleResearchpeer-review

Sleep regularity is associated with sleep-wake and circadian timing, and mediates daytime function in Delayed Sleep-Wake Phase Disorder

Murray, J. M., Phillips, A. J. K., Magee, M., Sletten, T. L., Gordon, C., Lovato, N., Bei, B., Bartlett, D. J., Kennaway, D. J., Lack, L. C., Grunstein, R. R., Lockley, S. W., Rajaratnam, S. M. W. & for the Delayed Sleep on Melatonin (DelSoM) Study Group, 1 Jun 2019, In : Sleep Medicine. 58, p. 93-101 9 p.

Research output: Contribution to journalArticleResearchpeer-review

The Impact of Shift Work on Sleep, Alertness and Performance in Healthcare Workers

Ganesan, S., Magee, M., Stone, J. E., Mulhall, M. D., Collins, A., Howard, M. E., Lockley, S. W., Rajaratnam, S. M. W. & Sletten, T. L., 15 Mar 2019, In : Scientific Reports. 9, 1, 13 p., 4635.

Research output: Contribution to journalArticleResearchpeer-review

Open Access

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., 18 Jun 2018, In : Chronobiology International. 35, 10, p. 1365-1374 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access

Continuous monitoring of visual distraction and drowsiness in shift-workers during naturalistic driving

Kuo, J., Lenné, M. G., Mulhall, M., Sletten, T., Anderson, C., Howard, M., Rajaratnam, S., Magee, M. & Collins, A., 24 Nov 2018, (Accepted/In press) In : Safety Science. 5 p.

Research output: Contribution to journalArticleResearchpeer-review