Document Detail

Level of vigilance influences licking frequency in rats.
MedLine Citation:
PMID:  12678668     Owner:  NLM     Status:  MEDLINE    
In rats, the basic licking rhythm is generated by the central pattern generator located in the brainstem. Nevertheless, the licking frequency can be regulated between about 7.5 and 4 Hz by changing the drinking conditions. If these conditions are kept constant, the licking frequency can be influenced only to a minor degree by factors such as deprivation level, type of solution, and phase of the session. The aim of our study was to compare the licking frequency of rats at different levels of vigilance. We investigated spontaneous licking of rats by an electrical lick sensor; parallel behavior monitoring was also performed. Animals kept in a stable environment and showing a lower level of vigilance licked at a rate of 5.96 Hz, fully vigilant rats licked significantly more rapidly at a frequency 6.57 Hz. The fastest rate of licking (6.49 Hz and 6.82 Hz, respectively) was encountered in alert rats under a mild stress caused by the presence of a second animal in the experimental box. The vigilance level is thus another factor affecting the licking rate of rats that should be taken into account in behavioral licking experiments.
O Vajnerová; E Bielavská; P Jiruska; G Brozek
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Physiological research / Academia Scientiarum Bohemoslovaca     Volume:  52     ISSN:  0862-8408     ISO Abbreviation:  Physiol Res     Publication Date:  2003  
Date Detail:
Created Date:  2003-04-07     Completed Date:  2004-01-05     Revised Date:  2008-04-02    
Medline Journal Info:
Nlm Unique ID:  9112413     Medline TA:  Physiol Res     Country:  Czech Republic    
Other Details:
Languages:  eng     Pagination:  243-9     Citation Subset:  IM    
Department of Physiology, Second Faculty of Medicine, Charles University, Prague, Czech Republic.
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MeSH Terms
Arousal / physiology*
Behavior, Animal / physiology*
Drinking Behavior / physiology*
Rats, Long-Evans
Reproducibility of Results
Sensitivity and Specificity

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

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