Activity Rhythms
Mostrando 1-12 de 128 artigos, teses e dissertações.
-
1. Clinical evaluation of biological rhythm domains in patients with major depression
Objective: Sleep, physical activity, and social domains of biological rhythm disruptions may have specific effects on the symptom cluster and severity of depression. However, there is a lack of structured clinical evaluation to specify the domains of biological rhythms in patients with depression. Methods: Ninety drug-naïve subjects with depression and 91
Braz. J. Psychiatry. Publicado em: 2020-06
-
2. Social media during a pandemic: bridge or burden?
Objective: Sleep, physical activity, and social domains of biological rhythm disruptions may have specific effects on the symptom cluster and severity of depression. However, there is a lack of structured clinical evaluation to specify the domains of biological rhythms in patients with depression. Methods: Ninety drug-naïve subjects with depression and 91
Sao Paulo Med. J.. Publicado em: 2020-06
-
3. A new approach to feed frequency studies and protein intake regulation in juvenile pirarucu
ABSTRACT This study aimed to investigate pirarucu's (Arapaima gigas) ability to trigger a self-feeding system to regulate protein intake between two standard diets that contained 39% and 49% of crude protein. The same system allowed the evaluation of daily feeding and locomotor activity rhythms. Eighteen fish (654.44±26.85g) were distributed into six 250 L
An. Acad. Bras. Ciênc.. Publicado em: 27/04/2017
-
4. Long-term correlation of the electrocorticogram as a bioindicator of brain exposure to ionizing radiation
Understanding the effects of radiation and its possible influence on the nervous system are of great clinical interest. However, there have been few electrophysiological studies on brain activity after exposure to ionizing radiation (IR). A new methodological approach regarding the assessment of the possible effects of IR on brain activity is the use of line
Braz J Med Biol Res. Publicado em: 12/06/2015
-
5. Circadian rhythms in insect disease vectors
Organisms from bacteria to humans have evolved under predictable daily environmental cycles owing to the Earth’s rotation. This strong selection pressure has generated endogenous circadian clocks that regulate many aspects of behaviour, physiology and metabolism, anticipating and synchronising internal time-keeping to changes in the cyclical environment. I
Mem. Inst. Oswaldo Cruz. Publicado em: 2013
-
6. Daily anticipatory rhythms of behavior and body temperature in response to glucose availability in rats
When food is available recurrently at a particular time of day, several species increase their locomotion in the hours that precede food delivery, a phenomenon called food anticipatory activity (FAA). In mammals, many studies have shown that FAA is driven by a food-entrained circadian oscillator (FEO) that is distinct from the light-entrained pacemaker in th
Psychol. Neurosci.. Publicado em: 2012-12
-
7. Influence of scheduled restricted feeding on reentrainment of motor activity rhythm after a 6-h light-dark advance in rats
Circadian rhythms are entrained to cyclic environmental cues such as the light-dark cycle and food availability. The suprachiasmatic nucleus of the hypothalamus is the main circadian oscillator in mammals and is entrained primarily by the light-dark cycle, although in some experimental situations food availability can affect its oscillation. Here we tested w
Psychology & Neuroscience. Publicado em: 2011-12
-
8. Dinâmica de crescimento de Cedrela odorata L. (Meliaceae) na Floresta Atlântica do Estado do Rio de Janeiro: fenologia, atividade cambial e dendrocronologia / Growth dynamics of Cedrela Odorata L. (Meliaceae) on the Atlantic Rain Forest of the State of Rio de Janeiro: phenology, cambial activity and dendrochronology
Along the 20th century, a few dendrochronological studies were developed with tropical species, according to the belief that variations of the climatic conditions on those regions werent regular and strong enough to induce an annual rate of radial growth. The researches on this topic in the last decades showed that the formation of annual growth rings in the
Publicado em: 2011
-
9. Serotonin and circadian rhythms
All mammal behaviors and functions exhibit synchronization with environmental rhythms. This is accomplished through an internal mechanism that generates and modulates biological rhythms. The circadian timing system, responsible for this process, is formed by connected neural structures. Pathways receive and transmit environmental cues to the central oscillat
Psychology & Neuroscience. Publicado em: 2010-12
-
10. Ecology, behavior and natural history of the harvester ant Pogonomyrmex naegelii (Formicidae, Myrmicinae) in cerrado vegetation: activity schedule, diet, home range, nest structure and demography / Ecologia, comportamento e história natural da formiga ceifeira Pogonomyrmex naegelii (Formicidae, Myrmicinae) em cerrado : ritmo biológico, dieta, área de vida, estrutura e demografia dos ninhos
Pogonomyrmex naegelii belongs to the group known as harvester ants, which collects and stores seeds in underground chambers for later consumption. These ants can be found in both warm temperate and tropical regions around the world, especially in areas of semiarid to arid vegetation, although they may also be found in moist habitats. The following study prov
Publicado em: 2010
-
11. Ocorrência de fogachos e sua relação com os ritmos circadianos de temperatura periférica do punho, atividade/repouso e estados de humor em mulheres na pós-menopausa. / Hot flashes episodes and the circadian rhythms of wrist temperature, rest/activity and mood in post-menopausal women.
In this study we evaluated possible correlations between peripheral (wrist) temperature, rest/activity and mood circadian rhythms and the occurrence of hot flashes in post-menopausal women. Nineteen patients from Hospital das Clínicas de São Paulo had participated this study. The patients were separated in 2 groups: post-menopausal women with hot flashes (
Publicado em: 2009
-
12. Regulation of the the rat pineal gland hormonal production by modulators of the inflammatory process / Regulação da produção hormonal da glândula pineal de ratos por moduladores do processo inflamatório
The melatonin, synthetized by the pineal gland, exihibits a number of regulatory activities on the internal dynamic homeostasis of mammals. These functions are related to the regulation of endogenous circadian and seasonal rhythms during healthy and physiopathological processes. This study evaluates the effects of the inflammatory modulators, corticosterone,
Publicado em: 2009