Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

The precise human bioclock, possibly imported.

Z A Keskil1, S Keskil

  • 1Department of Pharmacology, Kirikkale University Medical School, Kirikkale, Turkey. sk06-k@tr.net

Medical Hypotheses
|May 25, 2002
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

An in vivo study on the effect of scaffold geometry and growth factor release on the healing of bone defects.

Journal of tissue engineering and regenerative medicine·2012
Same author

Preliminary report on surgical mask induced deoxygenation during major surgery.

Neurocirugia (Asturias, Spain)·2008
Same author

Can facet joint infiltrative analgesia reduce postoperative pain in degenerative lumbar disc surgery?

Neurocirugia (Asturias, Spain)·2008
Same author

VACTERL-H associated with central hypothyroidism: a case report.

Genetic counseling (Geneva, Switzerland)·2007
Same author

Ganglioglioma with lytic skull lesions: a case report.

Neurocirugia (Asturias, Spain)·2007
Same author

Tracing the dural tail with image-guided surgery.

Minimally invasive neurosurgery : MIN·2007
Same journal

Calcitonin Gene-Related Peptide-Induced Central Sensitization: A Hypothesis for Long COVID Symptoms.

Medical hypotheses·2026
Same journal

Subclinical mastitis during lactation: a modifiable risk factor for breast cancer?

Medical hypotheses·2025
Same journal

The Role of Hemispheric Sensory Shifts: Impacts on Stretch Reflex and Motor Plasticity Post-Stroke.

Medical hypotheses·2025
Same journal

Neuron-Targeted Exosome Therapy: A Novel Approach for Treating Cardiogenic Dementia via RyR2 Inhibition.

Medical hypotheses·2025
Same journal

How the Somatosensory System Adapts to the Motor Change in Stroke: A Hemispheric Shift?

Medical hypotheses·2024
Same journal

Unstable Plaque is a Treatable Cause of Cognitive Decline.

Medical hypotheses·2024
See all related articles

The biological clock is a precise, genetically determined timekeeper, not influenced by environmental cycles. Its timing relative to Earth

Area of Science:

  • Chronobiology
  • Evolutionary Biology
  • Geophysics

Background:

  • The internal biological clock has long been considered imprecise.
  • Environmental factors are often thought to regulate circadian rhythms.

Purpose of the Study:

  • To re-evaluate the precision and environmental independence of the biological clock.
  • To investigate the evolutionary origins and potential external influences on the biological clock.

Main Methods:

  • Analysis of genetic clock mechanisms.
  • Extrapolation of biological clock timing through geological time.
  • Comparative analysis of circadian rhythms across species.

Main Results:

  • The biological clock operates with high precision, independent of environmental periodicity.

Related Experiment Videos

  • Earth's gradual rotational slowing has caused a relative phase shift in the internal clock.
  • Mammalian evolution marks the setting of this internal clock, with primates exhibiting unique free-running cycles.

    • Conclusions:

    • The biological clock is a highly accurate, genetically determined system.
    • Evolutionary and potentially extraterrestrial factors may influence the biological clock's calibration.
    • Primates' distinct circadian rhythms warrant further investigation into their origins.