Document Detail


Circadian phase and period responses to light stimuli in two nocturnal rodents.
MedLine Citation:
PMID:  12182494     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We report period response curves (tauRC) for two nocturnal Murid species from India, Mus booduga and Mus platythrix. We further discuss the method of phase shift estimation in the presence of tau-changes, because such changes pose a serious methodological problem in the estimation of phase shifts. Although the tauRC indicates that most of the phase shifts are associated with small changes in tau, the period changes across all the phases showed a significant positive correlation with the phase shifts. We conclude that tauRCs are a reality even in nocturnal mammals, although their amplitude is less than what is usually found in diurnal mammals, and requires a larger data set to be distinguished from noise.
Authors:
Vijay Kumar Sharma; Serge Daan
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chronobiology international     Volume:  19     ISSN:  0742-0528     ISO Abbreviation:  Chronobiol. Int.     Publication Date:  2002 Jul 
Date Detail:
Created Date:  2002-08-16     Completed Date:  2003-03-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8501362     Medline TA:  Chronobiol Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  659-70     Citation Subset:  IM    
Affiliation:
Chronobiology Laboratory, Jawaharlal Nehru Center for Advanced Scientific Research, Bangalore, Karnataka, India. vsharma@jncasr.ac.in
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MeSH Terms
Descriptor/Qualifier:
Animals
Circadian Rhythm / physiology*,  radiation effects
Muridae / physiology*
Photic Stimulation
Photoperiod
Species Specificity

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