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Procedures for numerical analysis of circadian rhythms
Abstract This article reviews various procedures used in the analysis of circadian rhythms at the populational, organismal, cellular and molecular levels. The procedures range from visual inspectionExpand
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Cosinor-based rhythmometry
  • G. Cornelissen
  • Computer Science, Medicine
  • Theoretical Biology and Medical Modelling
  • 11 April 2014
A brief overview is provided of cosinor-based techniques for the analysis of time series in chronobiology. Expand
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Non-photic solar associations of heart rate variability and myocardial infarction
Abstract Alignment of serial epidemiological, physiological, including electrocardiographic data with variations in galactic cosmic rays, geomagnetic activity, and atmospheric pressure suggests theExpand
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Approximate Entropy in the Electroencephalogram during Wake and Sleep
Entropy measurement can discriminate among complex systems, including deterministic, stochastic and composite systems. We evaluated the changes of approximate entropy (ApEn) in signals of theExpand
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Approximate entropy of human respiratory movement during eye-closed waking and different sleep stages.
STUDY OBJECTIVE The breath-to-breath variability of respiratory parameters changes with sleep stage. This study investigates any alteration in the approximate entropy (ApEn) of respiratory movementExpand
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Slowly and very slowly desorbing organic compounds in sediments exhibit langmuir-type sorption
Desorption kinetics were determined for 1 2,4-trichlorobenzene (TCB), 13-dichlorobenzene (DCB), and trichloroeth-ylene (TCE) in a sediment at various concentrations. The desorption data wereExpand
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Nocturnal melatonin patterns in children.
Time patterns in nocturnal concentrations of circulating melatonin of children are quantified in 8 girls and 8 boys, 8.7-16.8 yr of age, classified by Tanner pubertal stage. Between 1900 and 0700 h,Expand
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Core body temperature and circadian rhythm of hot flashes in menopausal women.
Postmenopausal hot flashes are characterized by sweating and peripheral vasodilation and occur more frequently during increased heat loads. The circadian rhythm of core body temperature (TC) is wellExpand
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Clock gene expression in the murine gastrointestinal tract: endogenous rhythmicity and effects of a feeding regimen.
BACKGROUND & AIMS Based on observations that the gastrointestinal tract is subject to various 24-hour rhythmic processes, it is conceivable that some of these rhythms are under circadian clock geneExpand
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Do plasma melatonin concentrations decline with age?
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