Research Topics
| L C LackSummaryAffiliation: Flinders University Country: Australia Publications
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Detail Information
Publications
A brief afternoon nap following nocturnal sleep restriction: which nap duration is most recuperative?Amber Brooks
School of Psychology, Flinders University, Adelaide, SA, Australia
Sleep 29:831-40. 2006..The purposes of this study were to compare the benefits of different length naps relative to no nap and to analyze the electroencephalographic elements that may account for the benefits...- Treating chronobiological components of chronic insomniaLeon C Lack
Flinders University, Department of Psychology, G P O Box 2100, Adelaide, SA 5001, Australia
Sleep Med 8:637-44. 2007.... - The treatment of early-morning awakening insomnia with 2 evenings of bright lightLeon Lack
School of Psychology, Flinders University, GPO Box 2100, Adelaide, South Australia 5001
Sleep 28:616-23. 2005..To assess the effectiveness of brief bright-light therapy for the treatment of early-morning awakening insomnia... - Clinical management of delayed sleep phase disorderLeon C Lack
School of Psychology, Flinders University, South Australia
Behav Sleep Med 5:57-76. 2007..These include therapies to phase change the delayed sleep circadian rhythm such as morning bright light exposure, exogenous melatonin administration, and chronotherapy as well as some behavioral strategies... - Chronobiology of sleep in humansL C Lack
School of Psychology, Flinders University, Adelaide, South Australia, Australia
Cell Mol Life Sci 64:1205-15. 2007..Other less potent retiming effects may also be obtained from the judicious use of melatonin and exercise... - Acute finger temperature changes preceding sleep onsets over a 45-h periodLeon Lack
Department of Psychology, School of Social Sciences, The Flinders University of South Australia, Bedford Park, South Australia, Australia
J Sleep Res 11:275-82. 2002..This rapid increase of finger temperature was relatively consistent across the 45-h CR, despite very significant circadian variation of the pre-MSLT baseline finger temperature and homeostatic decrease of sleep latency... 
The relationship between insomnia and body temperaturesLeon C Lack
School of Psychology, Flinders University, South Australia, Australia
Sleep Med Rev 12:307-17. 2008..Further studies of thermoregulation are needed in the typical home environment in which the insomnia is most evident...- Light emitting diodes can be used to phase delay the melatonin rhythmH R Wright
School of Psychology, Flinders University, Adelaide, South Australia 5001, Australia
J Pineal Res 31:350-5. 2001..These data suggest the portable LED light source is an effective way of delivering light to phase shift the melatonin rhythm, with the blue/green LED being the more effective of the two LEDs... - Relationships between the circadian rhythms of finger temperature, core temperature, sleep latency, and subjective sleepinessMichael Gradisar
School of Psychology, Faculty of Social Sciences, Flinders University of South Australia, Bedford Park, South Australia
J Biol Rhythms 19:157-63. 2004..29). Although these data are correlational, they are consistent with the notion that finger temperature changes drive core temperature changes, which determine changes of subjective and objective sleepiness... - Effect of light wavelength on suppression and phase delay of the melatonin rhythmH R Wright
School of Psychology, Flinders University, Adelaide, South Australia
Chronobiol Int 18:801-8. 2001..The shorter wavelengths also showed the greatest DLMO delay on night 2, ranging from 27 to 36 min. The results were consistent with the involvement of a scotopic mechanism in the regulation of circadian phase... - Intensive Sleep Retraining treatment for chronic primary insomnia: a preliminary investigationJodie Harris
School of Psychology, Flinders University of South Australia, Adelaide, SA, Australia
J Sleep Res 16:276-84. 2007..Further exploration of this brief therapy is needed, with larger, randomized, placebo-controlled trials over longer follow-up periods, and in comparison to other traditional therapies for insomnia... 
The Flinders Fatigue Scale: preliminary psychometric properties and clinical sensitivity of a new scale for measuring daytime fatigue associated with insomniaMichael Gradisar
School of Psychology, Flinders University, Adelaide, South Australia
J Clin Sleep Med 3:722-8. 2007..To evaluate the psychometric properties and clinical significance of a new scale for measuring daytime fatigue associated with insomnia: The Flinders Fatigue Scale (FFS)...- Do chronic primary insomniacs have impaired heat loss when attempting sleep?Michael Gradisar
Flinders University Sleep Reserach Laboratory, School of Psychology, Flinders University, Adelaide, S A, Australia
Am J Physiol Regul Integr Comp Physiol 290:R1115-21. 2006..0 +/- 0.2 degrees C) was significantly higher than good sleepers (36.8 +/- 0.2 degrees C; P = 0.03). Whether insomniacs could have impaired heat loss that is masked by elevated heat production is discussed... - Does subjective sleepiness predict objective sleep propensity?Michelle Short
School of Psychology, Flinders University, Adelaide, South Australia, Australia
Sleep 33:123-9. 2010..The present study evaluated whether eliciting subjective judgments of sleepiness after a 1-minute period of quiet with eyes closed would strengthen the relationship between subjective and objective measures... - The short-term benefits of brief and long naps following nocturnal sleep restrictionA J Tietzel
Flinders University, Adelaide, Australia
Sleep 24:293-300. 2001..However, we conclude that the detrimental effects of sleep restriction were more rapidly and significantly ameliorated, at least within the hour following the nap, by a 10-minute afternoon nap... - The rhythms of human sleep propensity and core body temperatureL C Lack
School of Psychology, Flinders University of South Australia, Adelaide, Australia
J Sleep Res 5:1-11. 1996..These results suggested the possibility that a common oscillator determines the timing of both the body temperature rhythm and the phases of the sleep propensity rhythm... - Factors associated with maintenance of wakefulness test mean sleep latency in patients with mild to moderate obstructive sleep apnoea and normal subjectsSiobhan Banks
Adelaide Institute for Sleep Health, Repatriation General Hospital, Daw Park, South Australia, Australia
J Sleep Res 13:71-8. 2004..Further comprehensive study is needed if the test is to be used in a diagnostically meaningful way... - The recuperative value of brief and ultra-brief naps on alertness and cognitive performanceAmber J Tietzel
School of Psychology, Flinders University, Adelaide, SA, Australia
J Sleep Res 11:213-8. 2002..Further research is required to investigate whether the benefits of brief naps are because of the onset of stage 2 or delta wave sleep, or a specific duration of sleep between 90 s and 10 min... - Insomniacs' perception of wake instead of sleepJeremy D Mercer
School of Psychology, Flinders University, South Australia
Sleep 25:564-71. 2002..To establish if insomniacs' underestimation of sleep time is due to reduced ability to discriminate between sleeping and waking states... - The Maintenance of Wakefulness Test and driving simulator performanceSiobhan Banks
Adelaide Institute for Sleep Health, Repatriation General Hospital-Daw Park, Australia
Sleep 28:1381-5. 2005..Further research is needed to examine the relationship between daytime MWT results and driving simulator performance in sleepy patients (eg, those with obstructive sleep apnea) and in experimentally sleep-deprived normal subjects... - The maintenance of wakefulness test in normal healthy subjectsSiobhan Banks
Adelaide Institute for Sleep Health, Repatriation General Hospital, Daw Park, SA, Australia
Sleep 27:799-802. 2004..The Maintenance of Wakefulness Test (MWT) examines an individual's ability to stay awake in an environment of decreased sensory stimulation. Only 1 previous study has systematically examined the MWT in normal healthy subjects... - Differential effects of light wavelength in phase advancing the melatonin rhythmHelen R Wright
School of Psychology, Flinders University, Adelaide, South Australia, Australia
J Pineal Res 36:140-4. 2004..These results strengthen earlier findings that the human circadian system is more sensitive to the short wavelengths of light than the longer wavelengths...