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ISSN : 1226-9654

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Characteristics of Sensory Information Produced by Capsaicin in the Cat Tongue

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
1991, v.3, pp.100-110
Bae-Hwan Lee (Department of Psychology, Korea University)
Ki-Suk Kim (Department of Psychology, Korea University)
Ki-Young Kim (Department of Psychology, College of Medicine, Korea University)
Choon-Jo Jin (Department of Intermal Medicine, College of Medicine, Kon-Kuk University)
Heung-Shik Na (Department of Psychology, College of Medicine, Korea University)
Seung-Kil Hong (Department of Psychology, College of Medicine, Korea University)
Lee, B., Kim, K., Kim, K., Jin, C., Na, H., & Hong, S. (1991). Characteristics of Sensory Information Produced by Capsaicin in the Cat Tongue. The Korean Journal of Cognitive and Biological Psychology, 3, 100-110.
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Abstract

The present study was performed to investigate the characteristics of sensory information produced by capsaicin in the tongue. Activities of the chorda tympani(CN) and lingual nerves(LN) were recorded while taste stimuli and capsaicin were being applied topically, and capsaicin and algesics were being injected intra-arterially to the tongue of cats anesthetized with α-chloralose. Responses of the CN fibers to topically applied capsaicin were correlated with those to taste stimuli and intre-arterially injected algesics. Responses of the CN fibers to intra-arterially applied capsaicin were correlated with those to topically applied capsaicin and intra-arterially injected algesics. Responses of the LN fibers to topically applied capsaicin were correlated with those to intra-arterially injected algesics. Responses of the LN fibers to intra-arterially aplied capsaicin were correlated with those to topically applied capsaicin and intra-arterially injected algesics. These results suggest that capsaicin provoke taste as well as pain sensation in the tongue. Taste information produced by capsaicin is conveyed to the brain via the CN and pain information via the LN. However, the possibility that pain information may be conveyed via the CN can not be excluded.

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The Korean Journal of Cognitive and Biological Psychology

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