a biological rhythm or cycle of behaviour which is repeated every 24 hours.
A biological rhythm that has a period length of about 24 hours.
An innate, daily, fluctuation of physiological and behavioral functions, including sleep waking, generally tied to the 24 hour day-night cycle but sometimes to a measurably different (e.g., 23 or 25 hour) periodicity when light/dark and other time cues are removed.
a cycle of active and non-active periods in organisms determined by internal mechanisms, repeating about every 24 hours
an endogeneous biological clock whose period is about 24 hours. Examples: leaf movement in bean plants; sleep-wake cycle of mammals
endogenous rhythms of about 24 hours that occur even in the absence of external cues.
a cyclical variation in a metabolic , physiological or beahvioural process with a period of about 24h when in constant conditions (the term ‘circadian' is derived from the Latin circa meaning about and diem meaning day).
an internal biological clock that runs approximately on a 24 hour cycle.
The cycle in the body that runs approximately twenty-four hours.
A cyclical change in a physiological or biochemical process having a period of approximately 24 hours.
a daily rhythmic activity cycle based on a 24 hour interval
The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs, and stimuli, hormone secretion, sleeping, feeding, etc. This rhythm seems to be set by a “biological clock” which in turn set by recurring daylight and darkness.
Regular alterations in physiological variables during a 24-hour cycle.
Daily biological changes that influence human behaviors. For example, sleep and waking are daily events.
Biological rhythms with periodicity of approximately 24 hours
a daily cycle of activity observed in many living organisms
Circadian rhythms, also called diurnal rhythms, are biological rhythms or variations that repeat with a cycle of about 24 hours.
a self-sustained biological rhythm which in an organism's natural environment normally has a period of approximately 24 hours
Biological timing and rhythmicity that, in human beings, is characterized by cycles of approximately 24 hours. Synonym: biological clock.
A biological pattern based on a daily cycle of about 24 hours, eg. sleeping and eating.
sir-KA-dee-en RITH-um Regular, daily rhythm of a biological function. 587
relating to or exhibiting approximately 24-hour periodicity, especially related to fluctuation of behavioral and physiological functions, including sleep waking. Sometimes to a different (e.g., 23 or 25 hour) periodicity when light/dark and other time cues are removed. Circadian Rhythm Sleep Disorders are disorders that are related to the timing of sleep within the 24-hour day. Some of these disorders are influenced by the timing of the sleep period that is under the individual's control (e.g., shift work or time zone change). Others in this group are disorders of neurological mechanisms (e.g., irregular sleep-wake pattern and advanced sleep phase syndrome).
An innate daily fluctuation of physiological or behavioral functions, including sleep-wake states generally tied to the 24-hour daily dark-light cycle. Sometimes occurs at a measurably different periodicity (e.g., 23 or 25 hours) when light/dark and other time cues are moved.
A pattern based on a 24 hour cycle
The rhythmic repetition of certain phenomena in living organisms at about the same time each day. Without cues provided by light, the human circadian cycle lasts 25.9 hours.
pertains to events that occur at approximately twenty-four-hour intervals, such as certain physiological phenomena.
your body's 24-hour internal clock.
A cycle of behavior or physiological change lasting approximately 24 hours.
The endogenous rhythm of the body ("body clock"), which is entrained by the 24-hour light-dark cycle. In mammals, it is generated in the suprachiasmatic nucleus of the hypothalamus. The term originates from the latin expression circa dies, "approximately one day".
A rhythm with a period of about 24 hours, applied especially to the rhythmic repetition of certain phenomena in living organisms at about the same time each day.
A rhythm that spans about a twenty-four-hour day, such as that of the sleep-waking cycle. Circadian rhythms in humans originate from a clock circuit in the hypothalamus that is set by information from the optic nerve about whether it is day or night.
Circadian rhythms are biological rhythms or variations that repeat with a cycle of about 24 hours. They are also known as Diurnal Rhythms.
An innate, daily fluctuation of physiologic or behavioral functions, including sleep-wake states generally tied to the 24-hour clock
The sleep/wake cycle.
A cycle or rhythm that is roughly 24 hours long. Sleep-wakefulness, body temperature, and water excretion follow a circadian rhythm, as do a number of behavioral and psychological variables.
A circadian rhythm is a roughly-24-hour cycle in the physiological processes of living beings, including plants, animals, fungi and cyanobacteria. The term "circadian", coined by Franz Halberg, comes from the Latin circa, "around", and dies, "day", meaning literally "about a day." The formal study of biological temporal rhythms such as daily, weekly, seasonal, and annual rhythms, is called chronobiology.
Circadian Rhythm is a movie that focuses on a young woman and her radical journey to discover who she is and to find out why multiple enemies want her dead. The woman, Sarah Caul (played by Rachel Miner), is thrown into an action filled construct where she must put the pieces of her life together as well as confront the menace that follows her every move.