biorhythm

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bi·o·rhythm

(bī'ō-rith-m),
A biologically inherent cyclic variation or recurrence of an event or state, such as the sleep cycle, circadian rhythms, or periodic diseases.
[bio- + G. rhythmos, rhythm]
Farlex Partner Medical Dictionary © Farlex 2012

biorhythm

(bī′ō-rĭth′əm)
n.
An innate, cyclical biological process or function.

bi′o·rhyth′mic (-rĭth′mĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

biorhythm

Alternative medicine
A hypothetical biologic rhythm, which is said to be set at birth.
The biorhythm theory was first proposed by H Swoboda and W Fleiss, a contemporary and colleague of Sigmund Freud; proponents of the biorhythm theory believe there are three distinct cycles: a physical cycle of 23 days—which corresponds to co-ordination, immunity, self-confidence, and strength; an emotional cycle of 28 days; and an intellectual cycle of 33 days, all of which are defined by a sine wave; “critical periods” are believed to exist as an individual crosses the middle of a cycle, either from a high to a low, or vice versa.

Physiology
Cyclical variations in physiologic and biochemical function, level of activity and emotional state. Circadian biorhythms have a cycle of about 24 hrs; ultradian rhythms are < 1 day; infradian rhythms are greater than one day and may be up to weeks or months.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

bi·o·rhythm

(bī'ō-ridh-ĕm)
A biologically inherent cyclic variation or recurrence of an event or state, such as the sleep cycle, circadian rhythms, or periodic diseases.
[bio- + G. rhythmos, rhythm]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
The robotic canine uses biorhythmic technology to create responses that adapt to interactions with humans.
and 4 p.m., the afternoon circadian trough when most people are naturally at a biorhythmic low point and are most likely to fall asleep.
But under the direction of MIT professor Rosalind Picard, the Media Lab's Affective Computing group has developed computer systems that use biorhythmic sensors attached to a user's body and tiny cameras that record facial gestures to develop individual emotional profiles.
And she was able to identify some of the problems in her relationship with her ex-husband after examining their biorhythmic compatibility.
While acknowledging that "fault is often found with the continual, slightly modified repetition" in his style (Foreword 486), Lawrence says that he uses such repetition to show how biorhythmic impulses are sublimated in thought or language.
Featured are Perfect Serenity mattresses that have Aura Fresh Technology, which eliminates unwanted body odors, and the Orthocare collection, made of orthopedic foam materials with Biorhythmic Technology to help reduce stress, improve balance and provide back support.