Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6261770 | Brain Research Bulletin | 2014 | 6 Pages |
â¢Insular cortex is involved in taste processing.â¢Contextual shift affects to insular cortex activity when a taste is used.â¢Contextual specificity of latent inhibition shows this phenomenon.â¢Immunopositive cells indicate different processing of a same taste under shift context.
The present study analyzed the functional activity of granular and agranular insular cortices in contextual specificity of latent inhibition using a conditioned taste aversion paradigm. c-Fos immunolabeling was examined in insular cortex in preexposed and no preexposed groups under similar and different context conditions. Result showed that the exposition to a novel taste increased c-fos activity in insular cortex. However, a context shift caused an increase in immunolabeling in animals preexposed to saccharine. These results suggest insular cortex is part of a complex system to evaluate taste-response, and it may read the meaning of taste stimuli depending on the context.