Amplitude of One-Minute Fluctuations of Secondary Cosmic Rays as a Marker of Environmental Factor Determining Ultradian Rhythms in Body Temperature of Laboratory Rats.
Bull Exp Biol Med
; 172(1): 105-110, 2021 Nov.
Article
em En
| MEDLINE
| ID: mdl-34787780
ABSTRACT
The study examined association between oscillations of body temperature of laboratory Wistar rats maintained under constant illumination with the amplitude of fluctuations of secondary cosmic rays reported by neutron count rate provided by neutron monitors and geomagnetic undulations. In contrast to geomagnetic undulations, neutron count rate variations and body temperature oscillations in rats assessed by spectrum analysis of the corresponding step functions at 1-min intervals demonstrated almost permanent variations with the periods ranging from 100 to 400 min. Under conditions of constant illumination inducing changes in the period of circadian rhythm and predominance of the ultradian rhythms, an association between neutron count rate fluctuations and body temperature oscillations was observed perpetually during the day- and nighttime.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Temperatura Corporal
/
Radiação Cósmica
/
Ritmo Ultradiano
/
Nêutrons
Limite:
Animals
Idioma:
En
Revista:
Bull Exp Biol Med
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Federação Russa