Richard Stephenson
Professor Emeritus
Campus
St. George (downtown)
CSB Appointment
Emeritus
Research Areas
Animal Biology, Neurobiology, Physiology
Education
Ph.D. University of Birmingham 1987
B.Sc. University of Sheffield 1982
Primary Undergraduate Department
Cell & Systems Biology
Graduate Programs
Cell & Systems Biology
Research Description
Regulation and function of sleep.
Contact Information
Office Phone: 416-978-3491
Office: RW325C
Lab: RW325/RW327
Lab Phone: 416-946-7237
Email
Mailing Address
Department of Cell & Systems Biology
University of Toronto
25 Harbord St.
Toronto, ON M5S 3G5
Canada
Publications
2013
Statistical properties of sleep-wake behavior in the rat and their relation to circadian and ultradian phases
Stephenson R, Famina S, Caron AM, Lim J
2013, Sleep, 36, 1377-90, 23997372
A simple model for the origin of quasiperiodic ultradian rhythms in sleep-wake state in the rat
Stephenson R
2013, Communicative & integrative biology, 6, e22433, 23802038
2012
Sleep-wake behavior in the rat: ultradian rhythms in a light-dark cycle and continuous bright light
Stephenson R, Lim J, Famina S, Caron AM, Dowse HB
2012, Journal of biological rhythms, 27, 490-501, 23223374
2011
Sleep homeostasis: Progress at a snail’s pace
Stephenson R
2011, Communicative & integrative biology, 4, 446-9, 21966567
Behavioural evidence for a sleep-like quiescent state in a pulmonate mollusc, Lymnaea stagnalis (Linnaeus)
Stephenson R, Lewis V
2011, The Journal of experimental biology, 214, 747-56, 21307060
2010
Energy expenditure is affected by rate of accumulation of sleep deficit in rats
Caron AM, Stephenson R
2010, Sleep, 33, 1226-35, 20857870
2009
Automated analysis of sleep-wake state in rats
Stephenson R, Caron AM, Cassel DB, Kostela JC
2009, Journal of neuroscience methods, 184, 263-74, 19703489
2007
Prolonged deprivation of sleep-like rest raises metabolic rate in the Pacific beetle cockroach, Diploptera punctata (Eschscholtz)
Stephenson R, Chu KM, Lee J
2007, The Journal of experimental biology, 210, 2540-7, 17601958
Circadian rhythms and sleep-related breathing disorders
Stephenson R
2007, Sleep medicine, 8, 681-7, 17387041
2006
The effect of time of day on apnoea index in the sleeping rat
Stephenson R, Horner RL
2006, Respiratory physiology & neurobiology, 154, 351-5, 16554190
2005
A visual aid for computer-based analysis of sleep-wake state in rats
Mileva-Seitz VR, Louis RP, Stephenson R
2005, Journal of neuroscience methods, 148, 43-8, 15885800
A theoretical analysis of diving performance in the Weddell seal (Leptonychotes weddelli)
Stephenson R
2005, Physiological and biochemical zoology : PBZ, 78, 782-800, 16059847
Physiological control of diving behaviour in the Weddell seal Leptonychotes weddelli: a model based on cardiorespiratory control theory
Stephenson R
2005, The Journal of experimental biology, 208, 1971-91, 15879077
2004
A theoretical study of the effect of circadian rhythms on sleep-induced periodic breathing and apnoea
Stephenson R
2004, Respiratory physiology & neurobiology, 139, 303-19, 15122996
Design and validation of a computer-based sleep-scoring algorithm
Louis RP, Lee J, Stephenson R
2004, Journal of neuroscience methods, 133, 71-80, 14757347
2003
Do circadian rhythms in respiratory control contribute to sleep-related breathing disorders?
Stephenson R
2003, Sleep medicine reviews, 7, 475-90, 15018091
2002
Theoretical and practical considerations in the application of whole body plethysmography to sleep research
Stephenson R, Gucciardi EJ
2002, European journal of applied physiology, 87, 207-19, 12111280
2001
Circadian rhythms and sleep have additive effects on respiration in the rat
Stephenson R, Liao KS, Hamrahi H, Horner RL
2001, The Journal of physiology, 536, 225-35, 11579171
Respiratory control in neonatal mice with NADPH oxidase deficiency
Kazemian P, Stephenson R, Yeger H, Cutz E
2001, Respiration physiology, 126, 89-101, 11348637
Selected Contribution: Regulation of sleep-wake states in response to intermittent hypoxic stimuli applied only in sleep
Hamrahi H, Stephenson R, Mahamed S, Liao KS, Horner RL
2001, Journal of applied physiology (Bethesda, Md. : 1985), 90, 2490-501, 11356818
2000
Effects of hypoxia and hypercapnia on circadian rhythms in the golden hamster (Mesocricetus auratus)
Jarsky TM, Stephenson R
2000, Journal of applied physiology (Bethesda, Md. : 1985), 89, 2130-8, 11090559
A model of the chemoreflex control of breathing in humans: model parameters measurement
Duffin J, Mohan RM, Vasiliou P, Stephenson R, Mahamed S
2000, Respiration physiology, 120, 13-26, 10786641
Circadian rhythms in the chemoreflex control of breathing
Stephenson R, Mohan RM, Duffin J, Jarsky TM
2000, American journal of physiology. Regulatory, integrative and comparative physiology, 278, R282-6, 10644650
1998
Circadian rhythms in diving behavior and ventilatory response to asphyxia in canvasback ducks
Woodin M, Stephenson R
1998, The American journal of physiology, 274, R686-93, 9530234
1997
Day-night differences in the respiratory response to hypercapnia in awake adult rats
Peever JH, Stephenson R
1997, Respiration physiology, 109, 241-8, 9342801
1995
Respiratory and plumage gas volumes in unrestrained diving ducks (Aythya affinis)
Stephenson R
1995, Respiration physiology, 100, 129-37, 7624614
1994
Regional cerebral blood flow during submergence asphyxia in Pekin duck
Stephenson R, Jones DR, Bryan RM
1994, The American journal of physiology, 266, R1162-8, 8184958