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Diurnal rhythm of beta-endorphin in neonates.
Developmental pharmacology and therapeutics, 1989In an attempt to prove whether beta-endorphin diurnal rhythm existed in neonates, 17 infants with a mean (+/- SD) gestational age of 31.7 +/- 4.8 weeks and a birth weight of 1,790 +/- 898 g were studied at a mean postnatal age of 3.3 +/- 0.5 days. Plasma samples were obtained from a pre-existing umbilical arterial line at 09.00 h, noon and 15.00 h ...
K, Sankaran, W, Hindmarsh, L, Tan
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Theta and beta rhythm in the electroencephalograms of normal adults
Electroencephalography and Clinical Neurophysiology, 1951Abstract 1. 1. Low voltage theta activity was detected in 64 per cent of a group of 161 young normal adults and in 24 per cent of 50 mentally normal seniles, the differences between the two groups being significant at the one per cent level. This decrease of theta incidence with increasing age was discussed in relation to maturation processes ...
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Circadian rhythm of beta-glucuronidase.
Experientia, 1980The circadian rhythm of rat liver beta-glucuronidase has been studied in animals kept under highly standardized laboratory condition. A clear 24 h rhythm has been observed for this enzyme with a peak activity at 01.00 h and a trough at 13.00 h.
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Circadian rhythms of beta-endorphin in the aged.
Zeitschrift fur Gerontologie, 1986A circadian rhythm for beta-endorphin was observed by means of the cosinor method in aged subjects. The rhythm mesor is a little lower but its amplitude is more extended than in young subjects. The confidence intervals of the acrophases of the two groups are superimposable with a timing in the morning.
G, Casale +3 more
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[Localized frontoparietal beta rhythms and focused attention in animals].
Revue d'electroencephalographie et de neurophysiologie clinique, 1983In normal cats and monkeys, fronto-parietal beta rhythms (averages: 36 and 18 c/sec, respectively) were considered as a sign of focused attention, since they appeared during several different situations having in common that the subject's attention was drawn by a signal or an object of the environment.
J J, Bouyer, M F, Montaron, A, Rougeul
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Dependence of midazolam-induced beta rhythm on individual characteristics of alpha rhythm
Electroencephalography and Clinical Neurophysiology, 1995V.A. Feshchenko +3 more
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