Polycose taste pre-exposure fails to influence behavioral and neural indices of taste novelty
| Autor: | Ilene L. Bernstein, Sabiha K. Barot |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Male
Taste Drinking Behavior Insular cortex Amygdala Brain mapping Article Food Preferences Behavioral Neuroscience Latent inhibition Antimanic Agents Conditioning Psychological medicine Animals Rats Long-Evans Glucans Neurons Analysis of Variance Brain Mapping Behavior Animal fungi Neophobia Novelty Brain medicine.disease Immunohistochemistry Rats Oncogene Proteins v-fos medicine.anatomical_structure Gene Expression Regulation Sweetening Agents Exploratory Behavior Taste aversion Lithium Chloride Psychology Neuroscience |
| Zdroj: | Behavioral Neuroscience. 119:1640-1647 |
| ISSN: | 1939-0084 0735-7044 |
| DOI: | 10.1037/0735-7044.119.6.1640 |
| Popis: | Taste novelty can strongly modulate the speed and efficacy of taste aversion learning. Novel sweet tastes enhance c-Fos-like immunoreactivity (FLI) in the central amygdala and insular cortex. The present studies examined whether this neural correlate of novelty extends to different taste types by measuring FLI signals after exposure to novel and familiar polysaccharide (Polycose®) and salt (NaCl) tastes. Novel Polycose not only failed to elevate FLI expression in central amygdala and insular cortex, but also failed to induce stronger taste aversion learning than familiar Polycose. Novel NaCl, on the other hand, showed patterns of FLI activation and aversion learning similar to that of novel sweet tastes. Possible reasons for the resistance of Polycose to typical pre-exposure effects are discussed. |
| Databáze: | OpenAIRE |
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