Marie Dumont, Ph.D.
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Full Professor
Department of Psychiatry, Université de Montréal
Research Director, CARSM
Co-director of the Chronobiology Laboratory (CARSM)
Director, Neurophysiology Division, HSCM Research Center (CIUSSS-NIM)
514-338-2222, ext. 2246
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Education:
Post-doctorate in Human Chronobiology (Harvard University, Boston)
Ph.D. in Neuroscience (Université de Montréal)
M.Sc. in Experimental Psychology (Université Laval, Quebec City)
Research Interests:
Adaptation to night work; chronotypes (morning and evening types) and delayed timing of the sleep-wake schedule; effects of light exposure on circadian rhythms, sleep and vigilance; circadian rhythms and sleep-wake cycle in various medical conditions (traumatic brain injury, COPD).
Methodologies:
Field and laboratory studies; ambulatory measures of light exposure and rest-activity cycle (actigraphy); measure of non-visual sensitivity to light and of melatonin production; controlled light exposure.
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Academic Link:
http://www.recherche.umontreal.ca/la-recherche-a-ludem/la-vitrine-des-professeurs/informations/chercheur/288/
Chosen Publications:
Dumont M, Paquet J. Progressive decrease of melatonin production over consecutive days of simulated night work. Chronobiology International 2014, 31, 1231-1238.
Chapdelaine S, Paquet J, Dumont M. Effects of partial circadian adjustments on sleep and vigilance quality during simulated night work. Journal of Sleep Research 2012, 21, 380-389.
Dumont M, Lanctôt V, Cadieux-Viau R, Paquet J. Melatonin production and light exposure of rotating night workers. Chronobiology International 2012, 29, 203-210.
Dumont M, Blais H, Roy J, Paquet J. Controlled patterns of daytime light exposure improve circadian adjustment in simulated night work. Journal of Biological Rhythms 2009, 24, 427-437.
Goulet G, Mongrain V, Desrosiers C, Paquet J, Dumont M. Daily light exposure in morning-type and evening-type individuals. Journal of Biological Rhythms 2007, 22, 151-158.
Research
Main research topic: Light, biological rhythms and sleep.
General aim: Understand the effect of light on the human biological clock and determine how light exposure can cause or treat sleep-wake cycle disorders.
Project “Light and night work”:
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Both field and laboratory studies.
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Use ambulatory photometry (monitors worn 24/7 by night workers) to characterize profiles of light exposure associated with a better adjustment of their circadian clock.
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Modelization and testing of specific light exposure profiles in laboratory simulations of night work to find out profiles able to reduce sleep and vigilance difficulties associated with night work.
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Measure potential “toxic” effects of nighttime light exposure in night workers. Determine characteristics of light exposure associated with suppression of melatonin production (could be involved in increased cancer risks in night workers).
Project “Light exposure and light sensitivity in young adults complaining of a late sleep schedule”:
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Project in continuation with our series of studies on morning and evening chronotypes.
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Aim: determine the contribution of light exposure (especially blue light) and circadian sensitivity to light in the difficulty of some young adults to advance their bedtime in order to accommodate a standard work/school schedule.
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Light exposure in measured using 1-week ambulatory photometry and questionnaires; circadian light sensitivity is evaluated using a test of melatonin suppression in the laboratory.
Research supported by: National Sciences and Engineering Research Council of Canada (NSERC)
Team
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Lab Members:
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Jean Paquet, Ph.D.
Research Associate
Ph.D. in Psychology (Université de Montréal)
Specialist of data analyses for ambulatory measures of actigraphy and light exposure. Data management and statistical analyses.
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Catherine Duclos, B.Sc.
Ph.D. candidate in Biomedical Sciences, Université de Montréal
Co-direction with Dre Nadia Gosselin
Circadian rhythms in patients with moderate to severe traumatic brain injury.
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Christophe Moderie, B.Sc.
M.Sc. candidate in Biomedical Sciences, Université de Montréal
MD-M.Sc. program
Melatonin, circadian rhythms and non-visual light sensitivity in young adults complaining of a late sleep schedule.
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Solenne Van der Maren, B.Sc.
Research Trainee
Ph.D. candidate in Neuropsychology R/I, Université de Montréal
Direction by Dre Nadia Gosselin
Light exposure in young adults complaining of a late sleep schedule.
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Benjamin Gaudet-Fex, B.Sc.
M.Sc. candidate in Psychology, Université de Montréal
Co-direction with Dre Julie Carrier
Light exposure and sleep-wake cycle in younger and older healthy subjects.
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Previous Lab Members:
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Émilie Chan-Thim, Ph.D.
Ph.D. candidate in Exercise Sciences, Concordia University
Co-direction with Dre Véronique Pépin
Clinical impact of diurnal variations in chronic obstructive pulmonary disease (COPD).
2009-2016
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Marie-Lou Filliatrault, Dt.P., M.Sc.
Nutritionnist
2015-2016
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Véronique Daneault, Ph.D.
Ph.D. in Psychology, Université de Montréal
2009-2013
Co-direction with Dre Julie Carrier
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Simon Chapdelaine-Trépanier, M.Sc.
M.Sc. in Biomedical Sciences, Université de Montréal
2010-2012
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Catherine Beaulieu, Ph.D.
Ph.D in Biomedical Sciences, Université de Montréal
2003-3009
Co-direction with Dr Pierre Lachapelle (McGill University)
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Hélène Blais, B.A.
Technologist in Medical Electrophysiology
Research Coordinator
2004-2009
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Geneviève Goulet, M.Sc.
M.Sc. in Psychology, Université de Montréal
2004-2006
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Valérie Mongrain, Ph.D.
M.Sc. and Ph.D.in Neurological Sciences, Université de Montréal
2002-2006
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Brahim Selmaoui, Ph.D.
Biochimist
Research Assistant 2003-2005
Postdoctoral Fellow 2001-2003
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Marianne Rufiange, Ph.D.
M.Sc and Ph.D in Biomedical Sciences, Université de Montréal
1998-2004
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Suzie Lavoie, M.Sc.
M.Sc.in Biomedical Sciences, Université de Montréal
2001-2003
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Ève Beauchesne, M.Sc.
M.Sc. in Neurological Sciences, Université de Montréal
2000-2002
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Chantal Lafrance, Ph.D.
M.Sc. and Ph.D. in Neurological Sciences, Université de Montréal
1994-2000
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Amina Belcaid, M.Sc.
M.Sc. in Epidemiology, Université Laval
1996-2000
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Dalia Benhaberou-Brun, Inf., M.Sc.
M.Sc. in Biomedical Sciences, Université de Montréal
1996-1998
http://www.dalilabenhaberou.com/
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Marc Hébert, Ph.D.
M.Sc. and Ph.D. in Neurological Sciences, Université de Montréal
Co-direction with Dr Pierre Lachapelle (McGill University)
1992-1998
http://www.crulrg.ulaval.ca/fr/recherche/axes/chercheurs/chercheur.php?id=38
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Josée Guillemette, M.Sc.
M.Sc. in Biomedical Sciences, Université de Montréal
1994-1997
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Mariana Mila Macchi, Ph.D.
Postdoctoral fellow
1996
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Julie Carrier, Ph.D.
M.Sc. and Ph.D. in Psychology, Université de Montréal
Co-direction with Dr Franco Lepore (Université de Montréal)
1990-1995
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Publications
Duclos C, Dumont M, Arbour C, Paquet J, Blais H, Menon DK, De Beaumont L, Bernard F, Gosselin N. Parallel recovery of consciousness and sleep in acute traumatic brain injury. Neurology 2017, 88, 268-275.
Chan-Thim E, Dumont M, Moullec G, Parwanta Z, Trutschnigg B, Paquet J, Pepin V. Amplitude of the rest-activity cycle in chronic obstructive pulmonary disease: an exploratory study. ChronoPhysiology and Therapy 2016, 6, 75-83.
Duclos C, Dumont M, Potvin MJ, Desautels A, Gilbert D, Menon D, Bernard F, Gosselin N. Evolution of severe sleep-wake cycle disturbances following traumatic brain injury: A case study in both acute and subacute phases post-injury. BMC Neurology 2016, 16, 186.
Daneault V, Dumont M, Massé E, Vandewalle G, Carrier J. Light sensitive brain pathways and aging. Journal of Physiological Anthropology 2016, 35, 9.
Chan-Thim E, Dumont M, Rizk A, Parwanta Z, Pepin V, Moullec G. Diurnal variations in psychological distress in pulmonary disease. Rehabilitation Nursing Journal 2016, sous presse.
Wiseman-Hakes C, Duclos C, Blais H, Dumont M, Bernard F, Desautels A, Menon DK, Gilbert D, Carrier C, Gosselin N. Sleep in the acute phase of severe traumatic brain injury: A snapshot of polysomnography. Neurorehabilitation and Neural Repair 2016, 30, 713-721.
Dumont M, Paquet J. Progressive decrease of melatonin production over consecutive days of simulated night work. Chronobiology International 2014, 31, 1231-1238.
Duclos C, Dumont M, Wiseman-Hakes C, Arbour C, Mongrain V, Gaudreault P-O, Khoury S, Lavigne G, Desautels A, Gosselin N. Sleep and wake disturbances following traumatic brain injury. Perturbations du sommeil et de l'éveil à la suite d'un traumatisme craniocérébral. Pathologie Biologie 2014, 62, 252-261.
Daneault V, Hébert M, Alboury G, Doyon J, Dumont M, Carrier J, Vandewalle G. Aging reduces the stimulating effect of blue light on cognitive brain functions. Sleep 2014, 7, 85-96.
Chan-Thim E, Dumont M, Moullec G, Rizk AK, Wardini R, Trutschnigg B, Paquet J, De Lorimier M, Parenteau S, Pepin V. Clinical impact of time of day on acute exercise response in COPD. COPD: Journal of Chronic Obstructive Pulmonary Disease 2014, 11, 204-211.
Dumont M, Paquet J. Progressive decrease of melatonin production over consecutive days of simulated night work. Chronobiology International 2014, 31, 1231-1238.
Chan-Tim E, Dumont M, Moullec G, Rizk AK, Wardini R, Trutschnigg B, Paquet J, de Lorimier M, Parenteau S, Pepin V. Clinical impact of time of day on acute exercise response in COPD. COPD: Journal of Chronic Obstructive Pulmonary Disease 2014, 11(2), 204-211.
Duclos C, Dumont M, Blais H, Paquet J, Laflamme E, De Beaumont L, Wiseman-Hakes C, Menon DK, Bernard F, Gosselin N. Rest-activity cycle disturbances in the acute phase of moderate to severe traumatic brain injury. Neurorehabilitation and Neural Repair 2013, 28(5), 472-482.
Chapdelaine S, Paquet J, Dumont M. Effects of partial circadian adjustments on sleep and vigilance quality during simulated night work. Journal of Sleep Research 2012, 21, 380-389.
Dumont M, Lanctôt V, Cadieux-Viau R, Paquet J. Melatonin production and light exposure of rotating night workers. Chronobiology International 2012, 29, 203-210.
Dumont M, Blais H, Roy J, Paquet J. Controlled patterns of daytime light exposure improve circadian adjustment in simulated night work. Journal of Biological Rhythms 2009, 24, 427-437.
Goulet G, Mongrain V, Desrosiers C, Paquet J, Dumont M. Daily light exposure in morning-type and evening-type individuals. Journal of Biological Rhythms 2007, 22, 151-158.
Rufiange M, Beaulieu C, Lachapelle P, Dumont M. Circadian light sensitivity and rate of retinal dark adaptation in indoor and outdoor workers. J Biol Rhythms 2007, 22, 454-457.
Dumont M, Beaulieu C. Light exposure in the natural environment: relevance to mood and sleep disorders. Sleep Med 2007, 8, 557-565.
