Possible External Factors Determining Ultradian (4-20-min) Rhythms of Body Temperature.
body temperature
geomagnetic field
thermal neutron radiation
ultradian rhythms
Journal
Bulletin of experimental biology and medicine
ISSN: 1573-8221
Titre abrégé: Bull Exp Biol Med
Pays: United States
ID NLM: 0372557
Informations de publication
Date de publication:
Oct 2021
Oct 2021
Historique:
received:
05
03
2021
pubmed:
29
10
2021
medline:
22
2
2022
entrez:
28
10
2021
Statut:
ppublish
Résumé
The study examined the effect of passive magnetic shielding on the magnitude of rhythmic oscillations of body temperature (BT) with 4-20 min periods in mice and their correlation with similar oscillations in unshielded control group. A magnetic permalloy screen that 35-fold attenuates the total geomagnetic field and decreased the undulations of magnetic field with the periods of few minutes by 5 times, produced no effect on the mean amplitude of BT oscillations within the same period range, their spectral power, and the cross-spectral density of examined rhythms in comparison with the control (unshielded) mice. Thus, either the mice possess a very sensitive magnetic sensory system or there exists an external non-magnetic factor affecting rhythmicity of BT. The study advanced intensity of thermal neutron radiation near the Earth's surface known to reflect the flow of accelerated particles generated by the secondary cosmic rays as the external factor, which strongly correlates with BT rhythms revealed by cross-spectrum analysis.
Identifiants
pubmed: 34709514
doi: 10.1007/s10517-021-05316-y
pii: 10.1007/s10517-021-05316-y
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
783-788Informations de copyright
© 2021. Springer Science+Business Media, LLC, part of Springer Nature.
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