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ISSN : 1226-9654

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Vol.4

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Effects of Lesions of Anterior Insular Gustatory Neocortex on Retention and Reacquisition of 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
1992, v.4, pp.141-149
Young-Hwa Yun (Korea University)
Yun, Y. (1992). Effects of Lesions of Anterior Insular Gustatory Neocortex on Retention and Reacquisition of Taste Aversion Learning induced by LiCl in the Rat. The Korean Journal of Cognitive and Biological Psychology, 4, 141-149.

Abstract

In my previous experiment(1991), rats with lesions of anterior insular gustatory neocortex(AIGN) showed good acquisition in condition of no delay between saccharin solution CS and LiCl US, and showed acquisition deficit in 30 minutes delay between CS and US but in both conditions showed faster extinction compared to sham-operated ones. This study was conducted to examine whether AIGN is critically involved in the retention and reacquisition of the conditioned taste aversion(CTA) induced by LiCl. CTA was produced by pairing 0.2% saccharin solution CS with 0.15M LiCl US, then subjects were operated. Rats with lesions of AIGN cannot retention at all and can reacquire CTA but showed reacquisition deficit and faster extinction compared to ones with lesions of somatic gustatory neocortex and to sham-operated ones. The results suggest that AIGN is a critically important neural substrate in the storage and reacquisition of CTA.

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The Korean Journal of Cognitive and Biological Psychology

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