Document Detail

Preservation of the functional advantage of human time structure.
MedLine Citation:
PMID:  7781929     Owner:  NLM     Status:  MEDLINE    
Upon exposure to sustained and synchronized diurnal activity, most human variables exhibit rhythms with a 24 h period. The best-fitting cosine curve to the data with a selected period (24 h) may yield parameters like acrophase (estimated peak time), amplitude, and mesor (rhythm adjusted mean). The sequential array of the rhythms' acrophases constructs the temporal order. Analyzing 168 different human rhythms revealed a time-dependent distribution with regard to the number of acrophases/h and to the clustering of variables according to function. Rhythms' amplitude/mesor ratios yielded a five modal distribution. The modes occurred at those clock times where repetitive habitual signals are anticipated. It is assumed that these specific features evolved to optimize the adaptive value of the temporal order.
A Ticher; I E Ashkenazi; A E Reinberg
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  FASEB journal : official publication of the Federation of American Societies for Experimental Biology     Volume:  9     ISSN:  0892-6638     ISO Abbreviation:  FASEB J.     Publication Date:  1995 Feb 
Date Detail:
Created Date:  1995-07-18     Completed Date:  1995-07-18     Revised Date:  2012-02-15    
Medline Journal Info:
Nlm Unique ID:  8804484     Medline TA:  FASEB J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  269-72     Citation Subset:  IM    
Department of Human Genetics, Sackler School of Medicine, Tel Aviv University, Israel.
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MeSH Terms
Analysis of Variance
Circadian Rhythm*
Hominidae / physiology*
Hormones / secretion
North America
Reg. No./Substance:

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