Document Detail


Effects of ultradian lighting and feeding schedules on the circadian rhythm of body temperature in monkeys.
MedLine Citation:
PMID:  3720429     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In estimating, by use of cosinor-test, the 12- and 24-h component parameters of body temperature circadian rhythm in monkeys under ultradian schedules of lighting and feeding (LD 6:6; DL 6:6) we have shown that an intensive 12-h component is registered in both cases. The presence of a 24-h component of circadian rhythm depends on the zeitgeber phase. This component is present in LD 6:6 (lighting hours 07:00-13:00 and 19:00-01:00) and is absent in DL 6:6 (01:00-07:00 and 13:00-19:00). We hold that the most satisfactory explanation of the phenomena observed is that 12-h component is the result of a masking effect induced by the 12-h schedule (exogenous component) whereas the 24-h component reflects the intrinsic pacemaker work (endogenous component). It should be noted that in our case the masking effect in body temperature rhythm is circadian phase-dependent.
Authors:
A D Slonim; A A Sorokin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chronobiologia     Volume:  13     ISSN:  0390-0037     ISO Abbreviation:  Chronobiologia     Publication Date:    1986 Jan-Mar
Date Detail:
Created Date:  1986-07-25     Completed Date:  1986-07-25     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0434557     Medline TA:  Chronobiologia     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  55-63     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Body Temperature*
Circadian Rhythm*
Eating*
Lighting*
Macaca mulatta
Macaca nemestrina
Papio
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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