Latent inhibition of conditioned disgust reactions in rats

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• 作者：Matías López (1)
  Patricia Gasalla (1)
  Mercedes Vega (1)
  Cheryl L. Limebeer (2)
  Erin M. Rock (2)
  Katharine J. Tuerke (2)
  Holly Bedard (2)
  Linda A. Parker (2)
  
• 刊名：Learning & Behavior
• 出版年：2010
• 出版时间：May 2010
• 年：2010
• 卷：38
• 期：2
• 页码：177-186
• 全文大小：1097KB
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• 作者单位：Matías López (1)
  Patricia Gasalla (1)
  Mercedes Vega (1)
  Cheryl L. Limebeer (2)
  Erin M. Rock (2)
  Katharine J. Tuerke (2)
  Holly Bedard (2)
  Linda A. Parker (2)
  
  1. Departamento de Psicología, Universidad de Oviedo, Plaza de Feijóo s/n, 33003, Oviedo, Spain
  2. University of Guelph, Guelph, Ontario, Canada
  
• ISSN：1543-4508

文摘

The present experiments, using the latent inhibition (LI) paradigm, evaluated the effect of nonreinforced exposure to saccharin on the acquisition of an LiCl-induced saccharin aversion as measured by conditioned disgust reactions in the taste reactivity test and conditioned taste avoidance in a consumption test. When rats were preexposed to saccharin by bottle exposure (Experiments 1 and 3), LI was evidenced only by conditioned taste avoidance (bottle testing), but not by conditioned disgust reactions (intraoral [IO] testing). On the other hand, when rats were preexposed to saccharin by IO infusion (Experiments 2 and 3), LI was evidenced only by conditioned disgust reactions, but not by conditioned taste avoidance. Experiment 4 showed that LI of conditioned disgust reactions does not appear to be affected by a context shift from preexposure to testing phases. These results show that the expression of LI of both conditioned taste avoidance and conditioned disgust reactions depends critically on a common method of flavor exposure during preexposure and testing.