1997 …2023
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Personal profile

Biography

Sleep is increasingly recognised as the third pillar of good health, along side diet and exercise. Poor sleep quality and sleep deficiency are linked to a number of serious health problems, including depression and cardiovascular disease, as well as impaired alertness and neurocognitive functioning, reduced productivity and increased accident risk.

Our research program aims to investigate the role of the internal biological clock in the regulation of the sleep-wake cycle, and how disruption of the clock leads to sleep disorders and other physiological consequences (for example, in shift workers). We are developing novel treatment approaches for sleep disorders that are caused by biological clock disruption. These include light and melatonin treatments. We are also investigating the contribution of sleep disturbances and fatigue to mood disorders and impaired cognition in clinical populations.

Sleep loss and impaired alertness adversely affect occupational safety, health and productivity, and also road safety. About 20 percent of serious car crash injuries are associated with driver sleepiness. Our research is examining innovative technologies to monitor alertness in occupational and transportations settings, and is developing and testing intervention strategies aimed at reducing the burden associated with impaired alertness in these contexts.

Community service

2011-present President, Australasian Sleep Association

http://www.sleep.org.au/

Research interests

  • Circadian regulation of sleep and wakefulness
  • Effects of melatonin and melatonin agonists on sleep and circadian rhythms
  • Effects of light on the human circadian system
  • Consequences of sleep loss and sleep disruption in neuropsychiatric disorders
  • Development of interventions for sleep loss and sleepiness in transport and occupational settings
  • Legal issues relating to sleep loss and sleepiness

Monash teaching commitment

2011-present Director of Undergraduate Programs, School of Psychology and Psychiatry

Keywords

  • Circadian rhythms
  • Insomnia
  • Light
  • Melatonin
  • Shift work
  • Sleep
  • Sleep Loss
  • Sleep disorders
  • Sleepiness-related crashes

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Projects 2003 2023

Optimise Sleep in Brain Ageing and Neurodegeneration

Naismith, S. L., Grunstein, R. R., Lewis, S. J. G., Phillips, C. L., D'Rozario, A., Hoyos, D. C., Wilson Rajaratnam, S., Halliday, G. M., Martins, R. N. & Lagopoulos, J.

1/01/1831/12/22

Project: Research

Research Output 1997 2019

A consensus opinion amongst stakeholders as to benefits of obstructive sleep apnoea treatment for cardiovascular health

Landry, S. A., Banks, S., Cistulli, P. A., Hamilton, G. S., Héraud, L., Kairaitis, K., Lubke, S., Mukherjee, S., Roebuck, T., Soda, J., Umbers, D., Rajaratnam, S. M. W. & Mansfield, D., Apr 2019, In : Respirology. 24, 4, p. 376-381 6 p.

Research output: Contribution to journalArticleResearchpeer-review

Advances of Melatonin-Based Therapies in the Treatment of Disturbed Sleep and Mood

Alston, M., Cain, S. W. & Rajaratnam, S. M. W., 24 May 2019, (Accepted/In press) Handbook of Experimental Pharmacology. Berlin: Springer, 15 p.

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Other

Application of a Limit-Cycle Oscillator Model for Prediction of Circadian Phase in Rotating Night Shift Workers

Stone, J. E., Aubert, X. L., Maass, H., Phillips, A. J. K., Magee, M., Howard, M. E., Lockley, S. W., Rajaratnam, S. M. W. & Sletten, T. L., 30 Jul 2019, In : Scientific Reports. 9, 1, 12 p., 11032.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File

Associations between sleep disturbances, mental health outcomes and burnout in firefighters, and the mediating role of sleep during overnight work: A cross-sectional study

Wolkow, A. P., Barger, L. K., O'Brien, C. S., Sullivan, J. P., Qadri, S., Lockley, S. W., Czeisler, C. A. & Rajaratnam, S. M. W., 26 May 2019, (Accepted/In press) In : Journal of Sleep Research. 15 p., e12869.

Research output: Contribution to journalArticleResearchpeer-review

Chronotype Genetic Variant in PER2 is Associated with Intrinsic Circadian Period in Humans

Chang, A. M., Duffy, J. F., Buxton, O. M., Lane, J. M., Aeschbach, D., Anderson, C., Bjonnes, A. C., Cain, S. W., Cohen, D. A., Frayling, T. M., Gooley, J. J., Jones, S. E., Klerman, E. B., Lockley, S. W., Munch, M., Rajaratnam, S. M. W., Rueger, M., Rutter, M. K., Santhi, N., Scheuermaier, K. & 5 othersVan Reen, E., Weedon, M. N., Czeisler, C. A., Scheer, F. A. J. L. & Saxena, R., 29 Mar 2019, In : Scientific Reports. 9, 1, 10 p., 5350.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File

Press / Media

CREATORS: 'Immersive Installation Explores Sleep Culture and Insomnia'

Matthew Bird, Marcus McMahon, Shanthakumar Wilson Rajaratnam, Sean Drummond, Caitlyn Parry, J David Franke & Phillip Adams

7/07/17

1 item of media coverage

Press/Media: Review

ART ALMANAC: 'Matthew Bird: Dormitorium'

Matthew Bird, Marcus McMahon, Shanthakumar Wilson Rajaratnam, Sean Drummond, Caitlyn Parry, J David Franke & Phillip Adams

10/06/17

1 item of media coverage

Press/Media: Review

SMH: 'Trouble sleeping? Designers might have the answer (here's a clue: lose the blue)'

Matthew Bird, Marcus McMahon, Shanthakumar Wilson Rajaratnam, Sean Drummond, Caitlyn Parry, J David Franke & Phillip Adams

28/03/17

1 item of media coverage

Press/Media: Article/Feature

ABC RADIO NATIONAL: 'An invitation to sleep'

Matthew Bird, Marcus McMahon, Shanthakumar Wilson Rajaratnam, Sean Drummond, Caitlyn Parry, J David Franke & Phillip Adams

20/03/17

1 item of media coverage

Press/Media: Article/Feature