Skip to search formSkip to main contentSkip to account menu

Circadian Rhythms

Known as: Nyctohemeral Rhythm, Rhythm, Nycthemeral, Rhythms, Nyctohemeral 
The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs or environmental and… 
National Institutes of Health

Related topics

Related topics

11 relations
Biological ClocksChronotherapyCircadian ClocksSleep

Broader (1)

Biorhythm

Narrower (1)

Diurnal Rhythm

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
Highly Cited
2005
Highly Cited
2005
A rapid screening approach to metabonomics using UPLC and oa-TOF mass spectrometry: application to age, gender and diurnal variation in normal/Zucker obese rats and black, white and nude mice.
The use of Ultra Performance Liquid Chromatography (UPLC), with a rapid 1.5 minute reversed-phase gradient separation on a 1.7… 
Highly Cited
1997
Highly Cited
1997
Tobacco mutants with a decreased number of functional nia genes compensate by modifying the diurnal regulation of transcription, post-translational modification and turnover of nitrate reductase
Abstract. Although nitrate reductase (NR, EC 1.6.6.1) is thought to control the rate of nitrate assimilation, mutants with 40–45… 
Highly Cited
1993
Highly Cited
1993
A comparison of fluticasone propionate, 1 mg daily, with beclomethasone dipropionate, 2 mg daily, in the treatment of severe asthma. International Study Group.
We wanted to compare the efficacy and safety of fluticasone propionate, a new topically active inhaled corticosteroid, to that of… 
Highly Cited
1991
Highly Cited
1991
Light exposure induces equivalent phase shifts of the endogenous circadian rhythms of circulating plasma melatonin and core body temperature in men.
Release of melatonin into the circulation by the pineal occurs almost exclusively during the nighttime hours. It has been… 
Highly Cited
1988
Highly Cited
1988
The circadian rhythm of plasma melatonin during the normal menstrual cycle and in amenorrheic women.
Plasma melatonin, PRL, and LH levels were measured in samples collected every 2 h for 24 h from 14 normally cycling women during… 
Highly Cited
1987
Highly Cited
1987
The Intergeniculate Leaflet Partially Mediates Effects of Light on Circadian Rhythms
Photic signals affect circadian activity rhythms by both phasic and tonic mechanisms that modulate pacemaker phase and period. In… 
Highly Cited
1983
Highly Cited
1983
Lesions of the paraventricular nucleus area of the hypothalamus disrupt the suprachiasmatic→ spinal cord circuit in the melatonin rhythm generating system
Review
1980
Review
1980
A chronometric approach to the study of feeding behavior
Highly Cited
1978
Highly Cited
1978
Circadian rhythm disorders in manic-depressives.
Seven circular manic-depressives were studied through complete of cycles of mania and depression. In five subjects, there was… 
Highly Cited
1966
Highly Cited
1966
Diurnal testosterone levels in peripheral plasma of human male subjects.
A diurnal variation of testosterone in the peripheral plasma of adult male subjects has been observed. Significantly greater… 
By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy Policy (opens in a new tab), Terms of Service (opens in a new tab), and Dataset License (opens in a new tab)