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ISSN : 1226-9654

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Vol.3

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Effects of Lesions of Anterior Insular Gustatory Neocortex on Taste Aversion Learning induced by LiCl in the Rat

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.41-52
Young-Hwa Yun (Korea University)
Ki-Suk Kim (Korea University)
Yun, Y., & Kim, K. (1991). Effects of Lesions of Anterior Insular Gustatory Neocortex on Taste Aversion Learning induced by LiCl in the Rat. The Korean Journal of Cognitive and Biological Psychology, 3, 41-52.

Abstract

This study was conducted to answer the question of whether anterior insular gustatory neocortex(AIGN) is critically involved in the acquisition and extinction of conditioned taste aversion(CTA) induced by LiCl in the rat. In experiment 1, a CTA was produced by pairing 0.2% saccharin solution CS with 0.15M LiCl US in the normal experimental group. In experiment 2, rats lacking AIGN, rats lacking somatic gustatory neocortex(SGN) and sham-operated rats were presented saccharin solution followed immediately by LiCl injection. When tested for CTA, in test trial 1 all subjects of 3 groups showed good acquisition but in test trial 2, 3, 4, rats lacking AIGN showed a faster extintion compared to ones lacking SGN and sham-operated ones. In experiment 3, saccharin solution CS was followed 30 minutes by LiCl. Rats lacking AIGN showed CTA acquisition deficit in test trial 1 and showed a faster extinction in test trial 2, 3, 4. The results indicate that AIGN is involved in the acquisition and extinction of taste aversion learning.

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The Korean Journal of Cognitive and Biological Psychology

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