Document Detail


Adult timing after preweaning shifts of Zeitgeber in rats: crossed sensitization to time?
MedLine Citation:
PMID:  9177567     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Preweaning albino rats were exposed from days 1 to 18 of life to successive 6-h shifts in light and temperature Zeitgebers, (1-18 rats), whereas controls (C) were raised under constant 12:12 L:D and temperature cycles. Cyclic Peak Interval performance at adulthood (100 days) showed that 1-18 rats were more accurate and sensitive to time than C subjects. These effects, which were akin to a crossed senzitization to time, were interpreted within the framework of scalar timing theory and the temporal information-processing model. They seemed not to depend upon changes in the pacemaker rate (lambda) or the memory constant K*, but to a change at the level of the decision process: 1-18 rats used a smaller response threshold than controls.
Authors:
H Lejeune; A El Ahmadi; M H Weyers
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Physiology & behavior     Volume:  61     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  1997 Jun 
Date Detail:
Created Date:  1997-07-15     Completed Date:  1997-07-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  919-29     Citation Subset:  IM    
Affiliation:
Psychobiology of Temporal Processes Unit, (PTPU), Faculty of Psychology, University of Liege, Belgium. helga.lejeune@ulg.ac.be
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MeSH Terms
Descriptor/Qualifier:
Animals
Behavior, Animal / physiology*
Circadian Rhythm / physiology*
Rats
Rats, Wistar
Time Factors
Weaning*

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