Document Detail

Multiple sensitivity of chordat typani fibres of the rat and hamster to gustatory and thermal stimuli.
MedLine Citation:
PMID:  5684036     Owner:  NLM     Status:  MEDLINE    
1. Impulse discharges in single chorda tympani fibres of rats and hamsters in response to gustatory stimuli representing the four basic qualities of taste as well as to cooling and warming of the tongue were recorded.2. In both rats and hamsters many fibres responded to more than one kind of gustatory stimulus as well as to thermal ones. The thermal sensitivity of these fibres was found to be about -0.5 impulses/sec. degrees C for cooling and 0.5 impulses/sec. degrees C for warming.3. Statistical calculations of the frequency of responses of chorda tympani fibres to single gustatory stimuli or combinations of stimuli were made, assuming that responsiveness to any one stimulus is independent of that to other stimuli. Evidence for relatively specific sensitivity to a particular stimulus or a particular combination of stimuli was obtained in the rat and the hamster.4. Across-fibre correlation coefficients between the amounts of responses to a pair of stimuli were calculated. In both the rat and the hamster, significant positive correlations were obtained with HCl, quinine and cooling. In addition, a positive correlation between sucrose and warming and a negative correlation between sucrose and NaCl were obtained in the hamster. The results are discussed in relation to the interaction of gustatory and thermal sensations of the human tongue.
H Ogawa; M Sato; S Yamashita
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of physiology     Volume:  199     ISSN:  0022-3751     ISO Abbreviation:  J. Physiol. (Lond.)     Publication Date:  1968 Nov 
Date Detail:
Created Date:  1968-12-08     Completed Date:  1968-12-08     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0266262     Medline TA:  J Physiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  223-40     Citation Subset:  IM    
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MeSH Terms
Chorda Tympani Nerve / physiology*
Cold Temperature
Evoked Potentials
Hot Temperature*
Hydrochloric Acid / pharmacology
Quinine / pharmacology
Sensory Receptor Cells / physiology
Sodium Chloride / pharmacology
Statistics as Topic
Sucrose / pharmacology
Time Factors
Tongue / physiology
Reg. No./Substance:
130-95-0/Quinine; 57-50-1/Sucrose; 7647-01-0/Hydrochloric Acid; 7647-14-5/Sodium Chloride

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

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