Ana Amélia Benedito-Silva

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Vigilance status was continually monitored in socially stable groups of rats exposed to the modified multiple platform (MMP) technique for sleep deprivation. For comparison, sleep parameters were also monitored in socially isolated rats deprived of sleep by the single platform (SP) method. In all cases, sleep was continuously recorded during baseline,(More)
The correlations between morningness-eveningness character (Horne & Ostberg score), sleep habits and temperature acrophase of 62 adolescents (mean age 13 years and 6 months) were investigated on three occasions at 6-month intervals. Horne & Ostberg scores ranged from 29 to 74 with a similar distribution on the three occasions. Temperature acrophase mode(More)
Individual differences in adaptation to night or continuously-rotating shiftwork may reflect distinct strategies of coping with temporal challenges of the environment. Rather than studying compensatory mechanisms, we have chosen the anticipatory response of the sleep onset time preceding work in order to reveal the strategy used by workers submitted to(More)
The aim of the present research was to study sleep/wake cycle parameters of adolescents and to examine biologic and social influences on their changing sleep patterns. This was a longitudinal study of sleep characteristics of a group of 66 adolescents (mean age, 13 years and 6 months). The adolescents underwent a physical examination, had their pubertal(More)
OBJECTIVE The aim of this study was to compare the prevalence of sleep habits and complaints and to estimate the secular trends through three population-based surveys carried out in 1987, 1995, and 2007 in the general adult population of the city of Sao Paulo, Brazil. METHODS Surveys were performed using the same three-stage cluster-sampling technique in(More)
Rats were submitted to electrolytic lesion of either the suprachiasmatic nucleus (SCN) or the subparaventricular hypothalamic zone (SPVH) and the effects on circadian behavioral rhythms were compared. While the SCN lesion abolished the circadian rhythmicity of all behavioral patterns, the SPVH lesion only abolished that of the eating and drinking behavior(More)
Siddha Samadhi Yoga is a program in which meditation is associated with pranayama (breathing exercises). 22 volunteers with anxiety complaints (M age = 42.8 yr., SD = 10.3) were assigned to two groups: 14 attended the yoga group, and 8 attended a waiting-list or control group. They were evaluated before the intervention and 1 month after it on the(More)
Light is the major synchronizer of circadian rhythms. In the absence of light, as for totally blind people, some variables, such as body temperature, have an endogenous period that is longer than 24 h and tend to be free running. However, the circadian rhythm of muscle strength and reaction time in totally blind people has not been defined in the(More)
Multidisciplinary treatment has proven to be the best therapeutic option to fibromyalgia (FM) and physiotherapy has an important role in this approach. Considering the controversial results of electrotherapy in this condition, the aim of this study was to assess the effects of combined therapy with pulsed ultrasound and interferential current (CTPI) on pain(More)
Data on three children's sleep-wake behavior during the first year of life submitted to spectral analysis reveal the presence of several frequencies in the circadian and ultradian ranges. The changes in the resulting spectra as age progresses show both an increase in overall rhythmicity, i.e., more data are explained by regular oscillations, and irregular(More)