Results 21 to 30 of about 12,457 (216)

Position Paper of the Portuguese Association of Chronobiology and Sleep Medicine Regarding Daylight Saving Time and its Impact on Circadian Timing System

Acta Médica Portuguesa, 2019
N/a.
Miguel Meira e Cruz, Sandra Marques, Alcinda David, Cláudio Laureano, Cláudio D'Elia, Carlos Teixeira, Amélia Feliciano   +6 more
doaj   +1 more source

Brain activity during a working memory task after daily caffeine intake and caffeine withdrawal: a randomized double-blind placebo-controlled trial

Scientific Reports, 2023
Acute caffeine intake has been found to increase working memory (WM)-related brain activity in healthy adults without improving behavioral performances.
Yu-Shiuan Lin, Janine Weibel, Hans-Peter Landolt, Francesco Santini, Helen Slawik, Stefan Borgwardt, Christian Cajochen, Carolin Franziska Reichert   +7 more
doaj   +1 more source

The effect of urbanization on sleep, sleep/wake routine, and metabolic health of residents in the Amazon region of Brazil [PDF]

, 2020
Studying communities with different levels of urbanization may further the understanding of risk factors underlying metabolic diseases. The present study is unique by comprising detailed assessment of sleep and activity, biological rhythms, and metabolic
SKENE, DEBRA JEAN, Moreno, Claudia R.C., Lowden, Arne,, Skene, Debra J., Vasconcelos, Suleima P., Lowden, Arne, Martins, Andressa J., Isherwood, Cheryl M., Moreno, Claudia R. C.,   +8 more
core   +1 more source

Time-on-task decrement in vigilance is modulated by inter-individual vulnerability to homeostatic sleep pressure manipulation

Frontiers in Behavioral Neuroscience, 2014
Under sleep loss, vigilance is reduced and attentional failures emerge progressively. It becomes difficult to maintain stable performance over time, leading to growing performance variability (i.e.
Micheline eMaire, Carolin Franziska Reichert, Virginie eGabel, Antoine U Viola, Julia eKrebs, Werner eStrobel, Hans-Peter eLandolt, Valérie eBachmann, Christian eCajochen, Christina eSchmidt   +9 more
doaj   +1 more source

Seasonal Variation in the Responsiveness of the Melanopsin System to Evening Light: Why We Should Report Season When Collecting Data in Human Sleep and Circadian Studies

Clocks & Sleep, 2023
It is well known that variations in light exposure during the day affect light sensitivity in the evening. More daylight reduces sensitivity, and less daylight increases it.
Isabel Schöllhorn, Oliver Stefani, Christine Blume, Christian Cajochen   +3 more
doaj   +1 more source

History and perspectives of Chronobiology in Brazil and Latin America

, 2023
This book is intended as a record of the history of implantation of Chronobiology in Brazil and Latin America. Is is written in Portuguese with contributions of colleagues from Latin America (texts in spanish).
Menna-Barreto, Luiz, Marques, Nelson
core   +3 more sources

Chronobiological Aspects of Narcolepsy [PDF]

Sleep, 1994
The circadian, circasemidian and ultradian features of sleep-wake patterns in narcolepsy are reviewed with respect to the hypotheses that chronobiological disturbances might either be specific to the condition or contribute to its symptomatic profile.
Broughton, R., Mullington, J.
openaire   +3 more sources

Chronobiology: Discovery of the molecular mechanisms of circadian rhythm

Journal of Mental Health and Human Behaviour, 2018
Advances in the field chronobiology have potential implications for physical as well as mental health and human behavior. Several paradigm-shifting discoveries established key mechanistic principles for the biological clock.
Pooja Shakya, Shyama Nand Roy, Raman Deep   +2 more
doaj   +1 more source

Is the association of chronotype with adolescent behavior problems mediated through social jetlag?

, 2023
9 páginasWe examined the associations of chronotype with behavior problems in a cross-sectional study of 957 Colombian adolescents (mean age, 14.6 years; 56% female), in addition to the mediating role of social jetlag.
Marín C., Oliveros H., Mora Plazas M., Zhu M.Q., Villamor E.   +4 more
core   +1 more source

Chronobiology and psychiatry : development of a conceptual model and integrative approach for South African psychiatrists [PDF]

, 2004
Bibliography: leaves 78-91.Chronobiology developed slowly after it was recognised that rhythmicity was a fundamental property of life. However, the principles of chronobiology are not well integrated in clinical practice.
McCallaghan, Johannes Jacobus
core   +1 more source