Biological systems as affected by time. Aging, biological rhythms, and cyclic phenomena are included. Statistical, computer-aided mathematical procedures are used to describe, in mathematical terminology, various biological functions over time.
A multidisciplinary field of research and practice studying the periodicity of biological systems and the application of principles of chronobiology to various therapeutic strategies. Aging, biological rhythms, and cyclic phenomena are included. Statistical, computer-aided mathematical procedures are used to describe, in mathematical terminology, various biological functions over time.
The adaptation of therapeutic approaches such as pharmacological (DRUG CHRONOTHERAPY), surgical, radiological, or physical to the known variations in biological RHYTHMICITY, such as CIRCADIAN RHYTHMS. The treatment is aimed at supporting normal rhythms, or modifying the timing of therapy to achieve maximal efficacy and minimal adverse effect.
The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, and feeding.
Disruptions of the rhythmic cycle of bodily functions or activities.

Effects of endothelin on spontaneous contractions in lymph vessels. (1/75)

A mode of action of endothelin (ET) on spontaneous contractions was investigated in ring preparations of isolated bovine mesenteric lymphatics. ET-1 at concentrations between 10(-10) and 10(-9) M caused a dose-dependent increase in the frequency of spontaneous contractions. The specific ET(A)-receptor antagonist BQ-123 (5 x 10(-7) M) caused a significant inhibition of the ET-1-induced positive chronotropic effect in the ring preparations with and without the endothelium. Mechanical denudation of the lymphatic endothelial cells produced a significant potentiation of the ET-induced positive chronotropic effect. BQ-3020 (10(-8)-10(-7) M), a selective ET(B)-receptor agonist, induced dose dependently negative chronotropic and inotropic effects on the spontaneous contractions in the ring preparations with intact endothelium. Mechanical removal of the endothelium caused a significant reduction of the BQ-3020-induced negative chronotropic and inotropic effects. The ET-1-induced positive chronotropic effect was potentiated by pretreatment with N(omega)-nitro-L-arginine methyl ester (L-NAME) (10(-5) M) but unaffected by aspirin (10(-5) M). Additional treatment with L-arginine (10(-4) M) completely reversed the L-NAME-mediated potentiation of the ET-induced chronotropic effect. These results suggest that stimulation of ET(A) receptors on the lymphatic smooth muscles causes a positive chronotropic effect on the spontaneous contractions, and stimulation of ET(B) receptors on the lymphatic endothelial cells induces a release of nitric oxide, which results in the chronotropic and inotropic effects on spontaneous contractions in isolated bovine mesenteric lymphatics.  (+info)

Morningness/eveningness and the need for sleep. (2/75)

The purpose of this study was to determine, in a large sample of adults of all ages (17-80 years), the effect of morningness/eveningness on sleep/wake schedules, sleep needs, sleep hygiene and subjective daytime somnolence. A total of 617 subjects (219 subjects per chronotype group) matched for age, sex and employment status, completed an abridged morningness/eveningness questionnaire, a questionnaire on sleep habits and the quality of sleep, and the Epworth Sleepiness Scale. Eveningness was associated with a greater need for sleep, less time in bed during the week compared to ideal sleep needs, more time in bed at the weekend, a later bedtime and waking-up time especially at the weekend, more irregular sleep/wake habits and greater caffeine consumption. These subjects built up a sleep debt during the week and extended their duration of sleep at the weekend. They did not, however, rate themselves more sleepy than other types, despite the fact that our results showed a clear link between subjectively evaluated daytime somnolence and sleep debt. Why they were less affected by sleep deprivation is not clear. This raises the question of individual susceptibility to the modification of sleep parameters.  (+info)

Is the secretion of atrial natriuretic peptide in man under neural control? (3/75)

AIMS: Previous work has described short-term variation in the circulating plasma level of atrial natriuretic peptide (ANP), but the mechanism remains unknown. Our aim was to investigate the role of cardiac innervation in this variability. METHODS AND RESULTS: Blood samples were obtained from the right atrium via a pulmonary artery flotation catheter every 2 min over a 90 min period. Seven patients who underwent cardiac transplantation by the standard biatrial technique (partial innervation) and ten patients who underwent transplantation by the bicaval technique (total denervation) were studied. ANP levels were measured by radioimmunoassay. The median ANP levels were somewhat higher in the biatrial group compared to the bicaval group [470 (150-1095) vs. 216 (100-605) pg. ml(-1); median (range); P = ns], and both were much higher than normal levels in the pulmonary artery (40 (24, 56) pg ml(-1); median and interquartile range). In both transplant groups circulating plasma ANP levels showed considerable variability. The median number of 'peaks' and 'troughs', as counted by visual inspection, were not significantly different between the two groups. Computer analysis identified 12-16 and 6-15 'pulses' in the biatrial and bicaval group, respectively. Further analysis revealed that pulse amplitude, height and area were significantly higher in the biatrial compared to the bicaval group. CONCLUSION: It would appear that variability of circulating plasma levels of ANP is preserved despite complete or partial cardiac denervation, and so a neural mechanism does not appear to account for such variation.  (+info)

Basis for dosing time-dependent changes in the antiviral activity of interferon-alpha in mice. (4/75)

The influence of dosing time on the pharmacological effect (antiviral activity) of interferon-alpha (IFN-alpha), and the pharmacological and pharmacokinetic mechanisms, were investigated in ICR male mice under a 12-h light/dark cycle (lights on from 7:00 AM to 7:00 PM). 2'-5'Oligoadenylate synthetase activity in plasma at 24 h after IFN-alpha (10 MI.U./kg, i.v.) injection, as an index of antiviral activity, was significantly higher for injections given at 9:00 AM than for injections given at 9:00 PM (P <.05). The uptake of [(3)H]thymidine by lymphocytes after 24-h incubation with IFN-alpha, as an index of lymphocyte-stimulating effect, was significantly higher in cells obtained at 9:00 AM than in the cells obtained at 9:00 PM (P <.01). The number of receptors per cell and the expression of interferon-stimulated gene factor in lymphocytes after 24-h incubation with IFN-alpha were significantly higher in the cells obtained at 9:00 AM than at 9:00 PM (P <.05). A significant dosing time-dependent difference was demonstrated for the pharmacokinetic parameters of IFN-alpha, which showed higher clearance for injections given at 9:00 PM than for those at 9:00 AM (P <.05). The metabolism of IFN-alpha was significantly higher in kidney obtained at 9:00 PM than at 9:00 AM (P <.05). These findings support that choosing the most appropriate time of day for administration of IFN-alpha, associated with the rhythmicity of IFN-alpha receptor function and IFN-alpha pharmacokinetics, may increase the antiviral activity in experimental and clinical situations.  (+info)

Biological time and in vivo research: a field guide to pitfalls. (5/75)

Biological rhythmicity is a fundamental characteristic of all life forms, from primitive bacteria to man. The molecular biology, genetics, and the neurobiology of the biological clock(s) are being elucidated. Daily (circadian) statistically significant fluctuations occur in all of the normal biological variables studied in the experimental animal and the human. Many researchers, however, are not aware of the negative impact biological rhythmicity can have on experimental design and/or data interpretation. This article serves not as a review, but as a "field guide" to the pitfalls that can occur when research is performed in the absence of an understanding of biological rhythmicity. The major topics discussed are: 1) data transfer from the diurnally in-active/resting/sleeping lab animal to the diurnally active human, 2) frequency of sampling, 3) free-running vs. synchronization, 4) alternating periods of resistance and susceptibility, 5) phase shifting of a rhythm, 6) the assumption that one mean +/- S.E. from control animals can be "stretched" across an experimental time span, and 7) plotting data on an "hours after treatment" format vs. a "time of day" format. The hope is that by avoiding the pitfalls, biological time will become an ally in the endeavor to understand human biology.  (+info)

The temporal organization of life: the impact of multi-frequency non-linear biologic time structure upon the host-cancer balance. (6/75)

The current scientific paradigm, based upon an erroneous assumption of linear biologic reality and simple cause and effect relationships, has outlived its usefulness. In order to begin to turn the voluminous data the reductive process provides us with daily into meaningful understanding of life, it is essential to integrate these data within a complex, multi-frequency temporo-spatial framework. This rhythmic chronobiology more accurately depicts the life process, as well as its evolutionary and ongoing vital interaction with the pulsating cosmic resonance structure. Examples of the kinds of thinking and experiments necessary to exploit this new paradigm are provided.  (+info)

Diurnal variations of post-exercise parasympathetic nervous reactivation in different chronotypes. (7/75)

The purpose of this study was to investigate the diurnal variation and chronotype differences, i.e., in morning-types and evening-types, in post-exercise vagal reactivation. Twelve healthy male college students who were classified as morning-type (6) and evening-type (6), based on responses to a questionnaire, participated in this study. Postexercise vagal reactivation was assessed as the time constant of the beat-by-beat heart rate decrease for the first 30 sec after exercise (T30) at an intensity lower than the ventilatory threshold. The subjects performed 3-min cycle ergometer exercise at an intensity corresponding to 80% of the ventilatory threshold after a 1 min warm-up exercise in the morning (7:00 - 8:00) and evening (17:00 - 18:00) to obtain the T30. A significant interaction (chronotype-by-time) effect was found for T30. The morning value of the T30 in evening-type subjects was significantly larger than their evening value and the morning value in morning-type subjects. There was no significant interaction effect for heart rate and oxygen uptake during exercise. These results suggest that diurnal variation in post-exercise vagal reactivation is different between morning-type and evening-type, and post-exercise vagal reactivation in evening-type individuals is sluggish in the morning.  (+info)

The brain decade in debate: IV. Chronobiology. (8/75)

The present article is the adapted version of an electronic symposium organized by the Brazilian Society of Neuroscience and Behavior (SBNeC) which took place on June 14, 2000. The text is divided into three sections: I. The main issues, II. Chronodrugs, and III. Methods. The first section is dedicated to the perspectives of chronobiology for the next decade, with opinions about the trends of future research being emitted and discussed. The second section deals mostly with drugs acting or potentially acting on the organism's timing systems. In the third section there are considerations about relevant methodological issues concerning data analysis.  (+info)

Chronobiology is the study of biological rhythms and their synchronization with environmental cycles. It examines how various biological processes in living organisms, including humans, are regulated by endogenous (internal) and exogenous (external) factors that recur over a specific time period. These rhythmic phenomena are known as circadian, ultradian, and infradian rhythms.

Circadian rhythms have a periodicity of approximately 24 hours and regulate many physiological processes such as sleep-wake cycles, body temperature, hormone secretion, and metabolism. Ultradian rhythms are shorter than 24 hours and include processes like heart rate variability, brain wave activity during sleep, and digestive enzyme release. Infradian rhythms have a longer periodicity, ranging from days to years, and include menstrual cycles in women and seasonal variations in animals.

Chronobiology phenomena are crucial for understanding the timing of various physiological processes and how they can be influenced by external factors like light-dark cycles, social cues, and lifestyle habits. This knowledge has applications in fields such as medicine, agriculture, and environmental science.

Chronobiology is the scientific discipline that studies the rhythmic patterns and cycles in living organisms (including humans) in relation to their environment, particularly in relation to the 24-hour day and longer seasonal cycles. It examines how various physiological processes and behaviors are synchronized with these external time cues, also known as zeitgebers.

Examples of areas studied within chronobiology include:

1. Circadian rhythms: These are the internal biological clocks that regulate many aspects of human physiology and behavior over a 24-hour period, such as sleep-wake cycles, body temperature, hormone release, and metabolism.
2. Seasonal affective disorder (SAD): This is a type of depression that occurs in response to changes in seasons, typically during the winter months when there is less natural light available.
3. Jet lag: This is a temporary disruption of circadian rhythms caused by rapid travel across time zones, resulting in symptoms such as fatigue, insomnia, and difficulty concentrating.
4. Shift work disorder: This is a condition that affects people who work irregular hours or night shifts, causing disturbances in sleep patterns and other physiological processes.
5. Menstrual cycle regulation: Chronobiology studies the hormonal changes and rhythms associated with the menstrual cycle to better understand reproductive health and potential treatments for related disorders.

Overall, chronobiology seeks to understand how these internal and external time cues interact and influence various aspects of human health and disease.

Chronotherapy is a medical treatment strategy that involves adjusting the timing of medication or other treatments based on the body's internal clock or circadian rhythms. The goal of chronotherapy is to optimize the effectiveness and minimize the side effects of treatments by administering them at specific times when they are most likely to be beneficial and well-tolerated.

For example, certain medications may be more effective when given at night because the body's metabolism slows down during sleep, allowing the drug to remain in the system longer. Similarly, some cancer treatments may be more effective when administered in the morning or evening based on the patient's circadian rhythms.

Chronotherapy can also involve adjusting lifestyle factors such as diet, exercise, and light exposure to help regulate the body's internal clock and improve overall health. This approach has been shown to be effective in treating a variety of conditions, including insomnia, depression, asthma, and cardiovascular disease.

A circadian rhythm is a roughly 24-hour biological cycle that regulates various physiological and behavioral processes in living organisms. It is driven by the body's internal clock, which is primarily located in the suprachiasmatic nucleus (SCN) of the hypothalamus in the brain.

The circadian rhythm controls many aspects of human physiology, including sleep-wake cycles, hormone secretion, body temperature, and metabolism. It helps to synchronize these processes with the external environment, particularly the day-night cycle caused by the rotation of the Earth.

Disruptions to the circadian rhythm can have negative effects on health, leading to conditions such as insomnia, sleep disorders, depression, bipolar disorder, and even increased risk of chronic diseases like cancer, diabetes, and cardiovascular disease. Factors that can disrupt the circadian rhythm include shift work, jet lag, irregular sleep schedules, and exposure to artificial light at night.

Chronobiology disorders are a group of conditions that involve disruptions in the body's internal biological clock, which regulates various physiological processes such as sleep-wake cycles, hormone release, and metabolism. These disorders can result in a variety of symptoms, including difficulty sleeping, changes in mood and energy levels, and problems with cognitive function.

Some common examples of chronobiology disorders include:

1. Delayed Sleep Phase Syndrome (DSPS): This condition is characterized by a persistent delay in the timing of sleep, so that an individual's preferred bedtime is significantly later than what is considered normal. As a result, they may have difficulty falling asleep and waking up at socially acceptable times.
2. Advanced Sleep Phase Syndrome (ASPS): In this condition, individuals experience an earlier-than-normal timing of sleep, so that they become sleepy and wake up several hours earlier than most people.
3. Non-24-Hour Sleep-Wake Rhythm Disorder: This disorder is characterized by a persistent mismatch between the individual's internal biological clock and the 24-hour day, resulting in irregular sleep-wake patterns that can vary from day to day.
4. Irregular Sleep-Wake Rhythm Disorder: In this condition, individuals experience a lack of consistent sleep-wake patterns, with multiple periods of sleep and wakefulness throughout the 24-hour day.
5. Shift Work Sleep Disorder: This disorder is caused by the disruption of normal sleep-wake patterns due to working irregular hours, such as night shifts or rotating schedules.
6. Jet Lag Disorder: This condition occurs when an individual travels across time zones and experiences a temporary mismatch between their internal biological clock and the new local time.

Treatment for chronobiology disorders may include lifestyle changes, such as adjusting sleep schedules and exposure to light, as well as medications that can help regulate sleep-wake cycles. In some cases, cognitive-behavioral therapy (CBT) may also be helpful in managing these conditions.

Chronobiology - field of biology that examines periodic (cyclic) phenomena in living organisms and their adaptation to solar- ... Theoretical Biology - the mathematical modeling of biological phenomena. Zoology - study of animals, including classification, ...
... is a field of biology that examines timing processes, including periodic (cyclic) phenomena in living organisms, ... Halberg Chronobiology Center at the University of Minnesota, founded by Franz Halberg, the "Father of Chronobiology" The ... Such modulators may be useful for chronobiology research and repair of organs that are "out of sync". Chronobiology is an ... Chronobiology comes from the ancient Greek χρόνος (chrónos, meaning "time"), and biology, which pertains to the study, or ...
A number of explanations of the phenomenon are discussed in the media, of varying degree of credibility. Usage of plastic bags ... Ozone holes may also lead to abnormal chronobiology in cockroaches. Internal competitions between cockroaches may decrease the ... Usage of modern construction materials may also contribute to the phenomenon; the population of cockroaches might have been ... The depopulation of cockroaches may be exaggerated, or this phenomenon may be temporary or cyclic. ...
The bang box was the primary means of investigation in chronobiology in the 1960s and 1970s. The application of this technique ... Additionally, the circadian rhythm of adult insect emergence was among the earliest chronobiological phenomena to be examined, ... The eclosion assay serves as a vital tool for researchers delving into chronobiology studies. The bang box is the first ... Measurements of eclosion in non-Drosorganisms have been used in various studies to study chronobiology and circadian rhythms. ...
... and wildlife Chronobiology - field of biology that examines periodic (cyclic) phenomena in living organisms and their ... and wildlife History of chronobiology - history of the field of biology that examines periodic (cyclic) phenomena in living ... History of quantum physics - history of the branch of physics dealing with physical phenomena where the action is on the order ... Quantum mechanics - branch of physics dealing with physical phenomena where the action is on the order of the Planck constant. ...
Chronobiology, Astrology, Periodic phenomena). ...
Periodic phenomena, Chronobiology, Ecology, Climatology, Branches of biology). ... Morren participated in 1842 and 1843 in Quetelets 'Observations of Periodical Phenomena' (Observations des Phénomènes ... Because many such phenomena are very sensitive to small variations in climate, especially to temperature, phenological records ... the term is used more generally to indicate the time frame for any seasonal biological phenomena, including the dates of last ...
The two animal experiments involved the chronobiology of little pocket mice and circadian rhythm in vinegar gnats. Both ... additional information about fluid distribution and fluid balance to get a better understanding of the fluid shift phenomena. ...
... chronobiology), the alignment of a circadian system's period and phase to the period and phase of an external rhythm ... a phenomenon of the atmosphere Entrainment (physical geography), the process by which surface sediment is incorporated into a ... chronobiology), the synchronization by light of organisms to environment rhythm "That's Entrainment", a Van Morrison song ...
Consider the statement that a phenomenon x causes a phenomenon y. X would be a necessary cause of y when the occurrence of y ... A classic example of lesioning in chronobiology is the exploration of circadian navigation in monarch butterflies. In a ... Tests of sufficiency in biology are used to determine if the presence of an element permits the biological phenomenon to occur ... In biological research, experiments or tests are often used to study predicted causal relationships between two phenomena. ...
... for recording daylight phenomena in his extensive photography and writing. In 2022 The Daylight Award for daylight in ... and former Head of the Centre for Chronobiology at the Psychiatric University Clinic in Basel. Anna Wirz-Justice has undertaken ...
A common way that actograms are utilized in chronobiology is by translating the actogram's data into phase response curves ( ... Bechtel, William (2012). "Diagramming Phenomena for Mechanistic Explanation" (PDF). Proceedings of the Annual Meeting of the ...
Galileo project entry SEDS Biography At the dawn of chronobiology Biological Clocks - Garden Variety Experiments Clock Classics ... and whether in doing so one could reverse the order of the phenomena of true day & true night." These results may have gone ... founder of modern chronobiology, Colin Pittendrigh, recognised the work of Jean-Jacques d'Ortous de Mairan. A video showing ... Chronobiology International. 17 (4): 433-451. doi:10.1081/CBI-100101056. PMID 10908122. S2CID 8035037. Retrieved 12 April 2012 ...
Chronobiology - study of biological rhythms. Chrysology - study of precious metals. Ciselure - art of chasing metal. Classical ... Biophysics - study of physics of biological phenomena. Biopsychology - application of the science of biology to the study of ... Astronomy - study of celestial bodies and phenomena. Astrophysics - study of behaviour of interstellar matter. Atmology - the ... study of phenomena Philematology - act or study of kissing Phillumeny - collecting of matchbox labels Philology - study of ...
This phenomena also shows the importance of E and M cells for adapting the activity of an organism different photoperiods. In ... In the field of chronobiology (the study of circadian rhythms), the dual circadian oscillator model refers to a model of ... The E&M oscillator model is one of the most prominent models in chronobiology. While useful to explain flies' adjustments ... Alternatively, the alpha phase of diurnal organisms lengthens under constant light; this phenomenon is known as alpha expansion ...
It was such a critical method for observing circadian rhythms in plants that the phenomena was dubbed the "hands of the ... Her work on circadian rhythms would define her career and markedly impact the field of chronobiology. In 1968, after completion ... At Yale, Satter continued her research on plant chronobiology by studying control of leaf movements. Her work demonstrated that ... and gained international acclaim for her work on chronobiology. She also stayed active with her husband as they traveled the ...
McMahon and Block devised a model explaining these phenomena: light during the day does not have much of an effect on the ... McMahon has contributed several important discoveries to the field of chronobiology and vision. His research focuses on ... Block chronobiology Society for Neuroscience Vanderbilt University John E. Dowling "Douglas G. McMahon, Ph.D." vanderbilt.edu. ... marking an exciting time in the young field of chronobiology. McMahon contributed to the understanding of retinal ...
Gfeller, Kate E. (2008). "Music: A human phenomenon and therapeutic tool". In Davis, William B.; Gfeller, Kate E.; Thaut, ... Affective neuroscience Art therapy Biomusicology Chronobiology Dispokinesis Eloise (psychiatric hospital) Embodied music ... Sacks had a genuine interest in trying to help people affected with neurological disorders and other phenomena associated with ...
This phenomenon, called 'Spontaneous Internal Desynchrony', typically occurred in subjects after a duration of days to weeks. ... Rütger Wever was a German scientist, known for his significant contributions to the field of Chronobiology, including some of ...
In: Trends in Chronobiology, ed. Hekkens W, Th JM, Jerkhof GA and Rhietveld WJ, Pergamon Press, Oxford and New York, pp. 149- ... Splitting: A phenomenon that occurs in high-intensity, constant light conditions, where two separate bouts of activity can be ... Together with Erwin Bünning and Colin Pittendrigh, he is considered to be a co-founder of the field of chronobiology. Aschoff's ... The term Aschoff used for this phenomenon is "arousal" due to non-photic zeitgebers. Data from experimental assays show a ...
In chronobiology, a circasemidian rhythm is a physiological arousal cycle that peaks twice in a 24-hour day. It may also be ... Eastman C. "Are separate temperature and activity oscillators necessary to explain the phenomena of human circadian rhythms?" ... Int J Chronobiology 2:175-180, 1974. - Kogi K, Ohta T. "Incidence of near accidental drowsing in locomotive driving during a ...
... (born 4 May 1953) is a professor of chronobiology at the Institute of Medical Psychology at Ludwig-Maximilian ... He observed in the period of spore production (conidia bands) the phenomenon of masking, an unexpected effect on circadian ... Kantermann, T; Roenneberg, T (2009). "Is light-at-night a health risk factor or a health risk predictor?". Chronobiology ... and from 2010 to 2012 was the member at large of the Society for Research of Biological Rhythms Aside from human chronobiology ...
Seasonal variation in human birth rate has been found to be a nearly universal phenomenon. Also, birth seasonality has been ... Chronobiology International. 26 (8): 1660-1672. doi:10.3109/07420520903534484. PMID 20030548. S2CID 2486064. Boland MR, Shahn Z ...
Chronobiology Cognitive biology Computational biology Conservation biology Cryobiology Developmental biology Embryology ... Architectural sociology Behavioral sociology Chinese sociology Collective behavior Activism Social movements Social phenomenon ...
Solar phenomena, Solar cycles, Periodic phenomena, Articles containing video clips). ... The impact of the solar cycle on living organisms has been investigated (see chronobiology). Some researchers claim to have ... These eruptive phenomena can have a significant impact on Earth's upper atmosphere and space environment, and are the primary ... This cycle has been observed for centuries by changes in the Sun's appearance and by terrestrial phenomena such as aurora but ...
Periodic phenomena, Fourier analysis, Music-related lists, Reference material lists, Science-related lists, Symbolism, ... Chronobiology - Citric acid cycle - Circadian rhythm - Clinical depression - Digestion - Ecology - Feedback - Infradian rhythm ...
It is a rare phenomenon for a self-funding scientist to form a bona fide IRO without traditional means of financial support. ... Chronobiology International. 24 (3): 521-537. doi:10.1080/07420520701420717. PMID 17612949. (Use dmy dates from October 2016, ...
De Candolle also made contributions to the field of chronobiology. Building upon earlier work on plant circadian leaf movements ... a phenomenon now known as convergent evolution. During his work with plants, de Candolle noticed that plant leaf movements ...
Chronobiology international 14 (5): 531-536 Solé, R., O. Miramontes y Goodwin BC. (1993) "Order and chaos in ant societies". J ... He suggested that nonlinear phenomena and the fundamental laws defining their behavior were essential to understand biology and ... 1997, "Temporal organization and disorganization in organisms". in: Chronobiology International 14 (5): 531-536 1997 Goodwin BC ... thus not taking into account dissipative effects that are required in a realistic approach to regulatory phenomena in biology. ...
She suffered a stroke on 30 June 1989 while traveling to the Gordon Conference on Chronobiology, while visiting the Marine ... She continued her research into circadian rhythms for the rest of her career, publishing her monograph Rhythmic Phenomena in ... M., Sweeney, Beatrice (1987). Rhythmic phenomena in plants (2nd ed.). San Diego: Academic Press. doi:10.1016/C2013-0-11566-8. ...
Chronobiology Discipline - history. Chronobiology Phenomena. Chronotherapy. Melatonin - history. Melatonin - therapeutic use. ... Chronobiology Phenomena. Hypertension. Abstract. This fascinating volume applies the concept of chronomics to the medical ... 1. From chronobiology to chronomedicine: Days of creation -- 2. From chronomics to chronoastrobiology: Many rhythms are control ... information for whatever we do -- 3. Chronobioethics: what is life? -- 4. Chronobiology -- 5. Chronomics of heart rate ...
Chronobiology Phenomena * Circadian Rhythm / physiology* * Exercise* * Humans * Sleep * Sports * Temperature * Vasodilation * ...
Physiological Phenomena [G07]. *Chronobiology Phenomena [G07.180]. *Periodicity [G07.180.562]. *Biological Clocks [G07.180. ...
Chronobiology - field of biology that examines periodic (cyclic) phenomena in living organisms and their adaptation to solar- ... Theoretical Biology - the mathematical modeling of biological phenomena. Zoology - study of animals, including classification, ...
... were significantly independently correlated with dawn phenomenon. ,i,Conclusions,/i,. Dawn phenomenon is associated with sleep ... i,Results.,/i, The levels of HbA1c and fasting glucose and the magnitude of dawn phenomenon were significantly higher in the ... The magnitude of dawn phenomenon was quantified by its increment from nocturnal nadir to prebreakfast. Peripheral leucocytes ... Poor sleep quality was significantly correlated with magnitude of dawn phenomenon. Multiple linear regression showed that sleep ...
V. Manca, L. Bianco, F. Fontana, Evolution and oscillation in P systems: applications to biological phenomena, in 5th ... Membrane Systems and Tools Combining Dynamical Structures with Reaction Kinetics for Applications in Chronobiology. *Thomas ... Membrane Systems and Tools Combining Dynamical Structures with Reaction Kinetics for Applications in Chronobiology. In: Frisco ...
Chronobiology is a field of biology that examines periodic (cyclic) phenomena in living organisms and their adaptation to solar ... Chronobiology sounds like a field relating to time travel and how it impacts us. I guess it is, on a very minor scale. I hope ...
In: Hekkens, T.J.M.W.; Kerkhof, G.A.; Rietveld, W.J. (org). Trends in Chronobiology. Oxford, Pergamon Press, Adv. Biosciences, ... Circadian Phenomenon in Depression: Theoretical Concepts and Empirical Findings. ...
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Chronobiology is a branch of biology that aims to study the nature of the natural cycles of a human body. ... Chronobiology deals with your internal clock and other phenomena. In the following we will explain the most important ... Chronobiology: what is it and why is it important?. Chronobiology: what is it and why is it important?. March 24, 2021. Leila ... What does chronobiology mean?. Chronobiology is a branch of biology that aims to study the nature of the natural cycles of a ...
The branch of biology concerned with cyclical physiological phenomena. Chronobiology. An instrument which records short ...
In Drosophila chronobiology, estimations of phases are often subjective, and anticipation indices vary significantly between ... However, much remains to be learned regarding the molecular and physiological mechanisms underlying this important phenomenon. ...
the relationship of biological or other phenomena to their locations (1879). Chronobiology. Chronobi-, Greek, Chrono-, chronos ... temporal or periodic phenomena in biology (1969). Climatology. Climat-, Greek, Clima-, klιma (κλιμα), inclination (from klιno ( ...
Manfredini R., Fabbian F., Manfredini F., Salmi R., Gallerani M., and Bossone E. (2013). Chronobiology in aortic diseases - "is ... "is this really a random phenomenon?" Prog. Cardiovasc. Dis. 56. , 116-124. ... Manfredini R., Fabbian F., Manfredini F., Salmi R., Gallerani M., and Bossone E. (2013). Chronobiology in aortic diseases - " ... this really a random phenomenon?" Prog. Cardiovasc. Dis. 56. , 116-124. ...
The Role of Chronobiology in Fertility. Chronobiology is a branch of biology that deals with natural and cyclic phenomena in ...
Chronobiology. Chronobiology Definition Chronobiology is a branch of biology that studies time-related phenomena (e.g., ...
Physiological Phenomena [G07] * Chronobiology Phenomena [G07.180] * Periodicity [G07.180.562] * Circadian Rhythm [G07.180. ...
Chronobiology examines the cyclic phenomena in living beings and their ability to adapt to solar and lunar rhythms. And ...
Chronobiology refers to the periodic rhythms of organisms in response to solar or lunar cycles. Chronobiology is a phenomenon ... Evidence for chronobiology can be found in many aspects of viticulture. Buds swell and burst every spring with warmer ... She is also interested in the endogenous regulation of fruit development and chronobiology.. Francecsa Moroni is a Sydney based ...
... a phenomenon termed diurnal inequality ([3] and figure 1b). Finally, there is the waxing and waning of the Moon itself with ... Chronobiology. Sunderland, MA: Sinauer Associates.. 5. Naylor E. 2010. Chronobiology of marine organisms. Cambridge, UK: ... Marine biorhythms, bridging chronobiology and ecology part I by Martin Bulla et alii. 07/02/2018 Lascia un commento Scritto da ... Marine biorhythms: bridging chronobiology and ecology. authors: Martin Bulla, Thomas Oudman, Allert I. Bijleveld, ...
Our group focuses on circadian rhythms, which are biological phenomenon that describes the bodys natural daily cycles. The ... Previous work in the field of chronobiology.. Terms and conditions. The doctoral student will be employed on a doctoral ... Doctoral student position in chronobiology - Hiring in process/Finished, not possible to apply. This advert is no longer ...
... has had a revolutionary impact on chronobiology. We can now properly account for numerous non-vision-related functions of light ... here we present an alternative model that dispenses with assumptions of causality between the two phenomena and explains mood ...
Mauvieux B., Gouthière L., Sesboüe B. and Davenne D. (2006). (Chronobiology and health of night workers : How can physical and ... and on the analytical approach to periodic phenomena : Gaudeau C., Gouthière L. (1992). Méthodologie danalyse des rythmes dans ... XXXVIth Congress of the French Society of Chronobiology, University of Rennes, France. (Abstract ), (White paper ) ... XXXVIth Congress of the French Society of Chronobiology, University of Rennes, France, May 17-19 2004. (Abstract ), (White ...
Work in chronobiology has shown that cyclical physiological phenomena are ubiquitous, with daily and multiday cycles evident in ... within a broader chronobiology context of the individual. Wearable devices may advance the understanding of factors that ...
Th2 cells are also the pathway through which allergic phenomena are mediated in pathological circumstances. In the normal ... organism, there is a constant oscillation between Th0, Th1 and Th2 cells and this oscillation has a chronobiology similar to ...
syndromes will push about the patterns of robustness and contributions from the Chronobiology to the stock opportunity through ... a detective where they will match for available questions, feel weit and kind phenomena, and be commentary. Thane Chastain, ...
The spatial organization of psychological phenomena. Current. Directions in Psychological Science,25(6), 393-398. https:// ... May 2021 · Chronobiology International. *. Péter P Ujma. *. Vsevolod Scherrer. A large number of previous studies reported a ...
Chronobiology Disorders:physiopathology, Chronobiology Phenomena, Chronotherapy, Circadian Rhythm:physiology, Drug ... Bibliography 2001; 22(5): 359-384 PubMed PMID: 11600879 Keywords: Animals, Chronobiology Phenomena, Delivery of Health Care, ... Essays on chronomics spawned by transdisciplinary chronobiology. Witness in time: Earl Elmer Bakken.. Halberg F, Cornélissen G ... Halberg F, Cornélissen G, Otsuka K, Katinas G, Schwartzkopff O. Essays on chronomics spawned by transdisciplinary chronobiology ...
Their data sugest that UFO phenomena tend to cluster in areas though there is the confounding effect of population density. ... Halaris, A. (ed.) (1987). Chronobiology and Psychiatric Disorders, Elsevier, NY.. Hansen, G.P. (1982). Dowsing: A Review of ... There are suggestions that dowsing ability is related to the EMF (Williamson, 1987). There are suggestions that UFO phenomena ... Gauld, A.O. & Wilkinson, H.P. (1989) "Geomagnetic Variations and Spontaneous Psi Phenomena", Paper presented at 13th Int. Conf ...
Special issue of Chronobiology International 19 #1 (2002). [28] T. Matsuo, S. Yamaguchi, S. Mitsui, A. Emi, F. Shimoda and H. ... 34] G.F. Webb, Resonance phenomena in cell population chemotherapy models. Rocky Mountain J. Math. 20 (1990) 1195-1216. , Zbl ...
  • Nutritional Physiological Phenomena" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (rush.edu)
  • This graph shows the total number of publications written about "Nutritional Physiological Phenomena" by people in this website by year, and whether "Nutritional Physiological Phenomena" was a major or minor topic of these publications. (rush.edu)
  • Below are the most recent publications written about "Nutritional Physiological Phenomena" by people in Profiles. (rush.edu)
  • Chronobiology - field of biology that examines periodic (cyclic) phenomena in living organisms and their adaptation to solar- and lunar-related rhythms. (wikipedia.org)
  • Chronobiology examines the cyclic phenomena in living beings and their ability to adapt to solar and lunar rhythms. (blueeyedcompass.com)
  • Chronobiology is a phenomenon that occurs in many behavioural, physiological and metabolic processes of living organisms. (ciencia-e-vinho.com)
  • Because personality variation can affect how behavioural types distribute spatially and interact with each other, such phenomena could promote personality-based mating and, potentially, be a first step towards reproductive isolation and species divergence. (academictransfer.com)
  • Yet another recent development in timing research is the growing dialogue between two fields that have grown up separately, although, superficially at least, they seem to have much in common: the experimental analysis of 'interval timing', traditionally the province of experimental psychology, and behavioural chronobiology. (elsevier.com)
  • Concepts involved with nutritional physiology, including categories of substances eaten for sustenance, nutritional phenomena and processes, eating patterns and habits, and measurable nutritional parameters. (nih.gov)
  • Chronobiology refers to the periodic rhythms of organisms in response to solar or lunar cycles. (ciencia-e-vinho.com)
  • Our group focuses on circadian rhythms, which are biological phenomenon that describes the body's natural daily cycles. (varbi.com)
  • Under the leadership of Prof. Dr. Achim Kramer, Head of the Chronobiology Research Unit at Charité's Institute for Medical Immunology, a team of researchers has been studying the role of heme (the iron-containing red pigment in red blood cells) for the body's circadian rhythms. (charite.de)
  • The study of circadian rhythms is called chronobiology. (psychologytoday.com)
  • This set of circadian rhythm (biorhythm) theory put forward at the end of the 19th century is similar to all kinds of rhythms in chronobiology, and is a set of pseudoscience with no scientific basis. (jeremiekislings.com)
  • Chronobiology is a branch of biology, but nevertheless very versatile. (sundtsupplements.com)
  • Chronobiology is a branch of biology that aims to study the nature of the natural cycles of a human body. (sundtsupplements.com)
  • The investigators are part of the UCSD Center for Circadian Biology, which is dedicated to the nascent and -often-overlooked field of chronobiology, the science of our inner biological clocks. (popsci.com)
  • In the field of time series analysis, new methods of rhythm detection or, more generally, of periodic phenomena (spectral analysis): "Reverse Elliptic Spectrum" and "Percent Rhythm Spectrum" are found. (euroestech.net)
  • Chronobiology (time, clocks and calendars). (ox.ac.uk)
  • The disruption of one of these regulatory mechanisms results in the disruption of the other - a phenomenon manifested by the occurrence of conditions such as diabetes or metabolic syndrome in people whose internal clocks are disrupted e.g. as a result of shift work. (charite.de)
  • Today I begin a 2-part series exploring a readily available phenomenon that occurs in your slumber and sleep world-dreaming. (parksmd.com)
  • However, much remains to be learned regarding the molecular and physiological mechanisms underlying this important phenomenon. (nsf.gov)
  • Chronobiology sounds like a field relating to time travel and how it impacts us. (assortedstuff.com)
  • syndromes will push about the patterns of robustness and contributions from the Chronobiology to the stock opportunity through a detective where they will match for available questions, feel weit and kind phenomena, and be commentary. (feddersen-engineering.de)
  • The magnitude of dawn phenomenon was quantified by its increment from nocturnal nadir to prebreakfast. (hindawi.com)
  • 2 ]. By using a continuous glucose monitoring system, dawn phenomenon could be determined by the difference between nocturnal nadir and prebreakfast glucose levels [ 2 ]. (hindawi.com)
  • The mechanism of dawn phenomenon still remains unclear. (hindawi.com)
  • Some endogenous hormones, especially growth hormone, cortisol, and glucagon, also take part in the pathophysiological mechanism of dawn phenomenon [ 4 , 5 ]. (hindawi.com)
  • Does a common mechanism account for timing and counting phenomena in the pigeon? (elsevier.com)
  • Did you mean topic:"chronoecology phenomena" ? (nshealth.ca)
  • The levels of HbA1c and fasting glucose and the magnitude of dawn phenomenon were significantly higher in the diabetes group with poor sleep quality than that with good sleep quality. (hindawi.com)
  • Dawn phenomenon mostly affects children and youth with type 1 diabetes, although it is not rare in subjects with type 2 diabetes (as high as 40%, reported by Monnier et al. (hindawi.com)
  • Furthermore, fasting glucose levels are one of the most important targets in the management of type 2 diabetes, and these can be affected by the dawn phenomenon. (hindawi.com)
  • Is the Subject Area "Chronobiology" applicable to this article? (plos.org)
  • There are luminous books and literature on the subject, some written by scientists trying to understand the phenomenon that is part of our sleep and recovery cycle. (parksmd.com)
  • Inclinación o preferencia natural de la hora del día en la que una persona o un organismo tienen la máxima actividad, especialmente en lo que se refiere al patrón de sueño y a las preferencias circadianas de sueño-vigilia. (bvsalud.org)
  • It is generally believed that dawn phenomenon is a result of pancreatic beta-cell dysfunction, which increases endogenous glucose production, persistent insulin resistance, and hepatic glucose output. (hindawi.com)
  • Statistical study of the analysis of a bioperiodic phenomenon). (euroestech.net)
  • Researchers at the Interdepartmental Neuroscience program at Northwestern University in Chicago reported this week that the detrimental impact of working in a windowless environment is a universal phenomenon. (psychologytoday.com)
  • When the period of the endogenous rhythm is close to that of the external factors (such as the 24-hour cycle of the earth), there will be a phenomenon of entrainment, which corrects the period of the endogenous rhythm to the external cycle. (jeremiekislings.com)