个人简介

Ph.D. University of Birmingham 1987, B.Sc. University of Sheffield 1982

研究领域

Animal Biology Neurobiology Physiology Psychology & Behavior

Research in this laboratory is currently focused on regulatory and functional aspects of sleep in the mollusc Lymnaea stagnalis. Video tracking and motion analysis, neurophysiological techniques and quantitative modeling are brought to bear on questions concerning the links between sleep-wake behaviour, animal energetics and the physiology of tissues and single identified neurons. Previous research in this laboratory has mainly looked at rodent sleep but the sheer complexity of sleep in mammals represents a major obstacle to real progress. We have therefore turned to a simple model system to facilitate the discovery of fundamental insights in the adaptive significance of sleep.

近期论文

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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.Sleep 2013 Sep;36(9):1377-90 pubmed A simple model for the origin of quasiperiodic ultradian rhythms in sleep-wake state in the rat.Stephenson R.Commun Integr Biol 2013 Jan;6(1):e22433 pubmed 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.J. Biol. Rhythms 2012 Dec;27(6):490-501 pubmed Sleep homeostasis: Progress at a snail's pace.Stephenson R.Commun Integr Biol 2011 Jul;4(4):446-9 pubmed Behavioural evidence for a sleep-like quiescent state in a pulmonate mollusc, Lymnaea stagnalis (Linnaeus).Stephenson R, Lewis V.J. Exp. Biol. 2011 Mar;214(Pt 5):747-56 pubmed Energy expenditure is affected by rate of accumulation of sleep deficit in rats.Caron AM, Stephenson R.Sleep 2010 Sep;33(9):1226-35 pubmed Automated analysis of sleep-wake state in rats.Stephenson R, Caron AM, Cassel DB, Kostela JC.J. Neurosci. Methods 2009 Nov;184(2):263-74 pubmed Prolonged deprivation of sleep-like rest raises metabolic rate in the Pacific beetle cockroach, Diploptera punctata (Eschscholtz).Stephenson R, Chu KM, Lee J.J. Exp. Biol. 2007 Jul;210(Pt 14):2540-7 pubmed Circadian rhythms and sleep-related breathing disorders.Stephenson R.Sleep Med. 2007 Sep;8(6):681-7 pubmed The effect of time of day on apnoea index in the sleeping rat.Stephenson R, Horner RL.Respir Physiol Neurobiol 2006 Dec;154(3):351-5 pubmed A theoretical analysis of diving performance in the Weddell seal (Leptonychotes weddelli).Stephenson R.Physiol. Biochem. Zool. 2005 Sep-Oct;78(5):782-800 pubmed A visual aid for computer-based analysis of sleep-wake state in rats.Mileva-Seitz VR, Louis RP, Stephenson R.J. Neurosci. Methods 2005 Oct;148(1):43-8 pubmed