Document Detail

Long-interval timing is based on a self-sustaining endogenous oscillator.
MedLine Citation:
PMID:  16480835     Owner:  NLM     Status:  MEDLINE    
The mechanism of anticipating long-intervals (16-21 h) was investigated. Rats earned food by interrupting a photobeam in a food trough during 3- or 4-h meals. Intermeal intervals were 16, 21, and 24 h (offset to offset) for independent groups of rats (n=8 per group). After approximately a month of experience with the intermeal intervals, the meals were discontinued. The rate of visiting the food trough increased as a function of time before the meal. When meals were discontinued, visits continued to be periodic. The periodicity was approximately 21 h after 16- and 21-h intermeal intervals and approximately 28 h after 24-h intermeal intervals. These data suggest that long-interval timing is based on a self-sustaining, endogenous oscillator.
Jonathon D Crystal
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2006-02-09
Journal Detail:
Title:  Behavioural processes     Volume:  72     ISSN:  0376-6357     ISO Abbreviation:  Behav. Processes     Publication Date:  2006 May 
Date Detail:
Created Date:  2006-02-27     Completed Date:  2006-09-29     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7703854     Medline TA:  Behav Processes     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  149-60     Citation Subset:  IM    
Department of Psychology, University of Georgia, Athens, GA 30602-3013, USA.
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MeSH Terms
Appetitive Behavior*
Biological Clocks*
Discrimination Learning
Extinction, Psychological
Rats, Sprague-Dawley
Reinforcement Schedule
Time Perception*
Grant Support

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