biological rhythm


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biological rhythm

Etymology: Gk, bios, life, logos, science, rhythmos
the periodic recurrence of a biological phenomenon, such as the respiratory cycle, the sleep cycle, or the menstrual cycle. Also called biorhythm.

biological rhythm

The regular occurrence of certain phenomena in living organisms.
See: circadian rhythm; biological clock
See also: rhythm

biological rhythm

any regularly occurring sequence of events in living organisms, either internal (ENDOGENOUS), e.g. heartbeat, or external (EXOGENOUS), e.g. the seasons and tides. See CIRCADIAN RHYTHM.
References in periodicals archive ?
Biological rhythms become problems to overcome, not intelligibilities to integrate.
The results of this study lend support to the hypothesis that EM pollution and its subsequent desynchronization of biological rhythms play a significant role in CFS.
Scientific publications, dedicated to research of biological rhythms with periods close to geophysical ones, present much experimental data pointing at the existence of lunar rhythms in biological processes [2, 3].
Both theses focused on the correlation between light and health--Bae's "Urban Therapy" explored a side effect of the increasing amount of time spent indoors and natural biological rhythms, and Ryan's "The Impact of Weekly Lighting Condition on Performance, Sleepiness, and Mood" focused on the biological clock over the course of a week.
The sun exerts hegemony over biological rhythms of nearly every organism on Earth.
Scientists say light pollution affects the biological rhythms of both humans and animals and disrupts the migratory patterns of birds.
Thus, it would be possible to identify the synchronization between the biological rhythms and the shift work in the standpoint of chronobiology.
The advent of electrical lighting permitted humans to stray from natural day-night cycles," which could potentially disrupt our biological rhythms, Bedrosian said.
As sleep drops and normal biological rhythms are disrupted, a person's body physically changes in ways that can help set the stage for diabetes, reports neuroscientist Orfeu Buxton of Boston's Brigham and Women's Hospital.
Study leader Prof Tami Martino, from the University of Guelph in Ontario, Canada, said: "Heart drugs are often given to patients in the morning for convenience without considering biological rhythms or time-related risks of adverse effects.
The study methods included a system of integrated computer research on software and hardware complex of the Omega-M, designed for the analysis of biological rhythms of human emissions of elektrokardiosignal in wide frequency band, allowing determining the level of reserves and the cardiovascular system, autonomic and central regulation.
Changes in alertness governed by daily fluctuations in biological rhythms can affect cognition, memory, and behavior.

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