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Olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors

Olfaction is determinant for the organization of rodent behavior. In a feeding context, rodents must quickly discriminate whether a nutrient can be ingested or whether it represents a potential danger to them. To understand the learning processes that support food choice, aversive olfactory learning...

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Autores principales: Torquet, Nicolas, Aimé, Pascaline, Messaoudi, Belkacem, Garcia, Samuel, Ey, Elodie, Gervais, Rémi, Julliard, A. Karyn, Ravel, Nadine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4079982/
https://www.ncbi.nlm.nih.gov/pubmed/25071486
http://dx.doi.org/10.3389/fnbeh.2014.00229
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author Torquet, Nicolas
Aimé, Pascaline
Messaoudi, Belkacem
Garcia, Samuel
Ey, Elodie
Gervais, Rémi
Julliard, A. Karyn
Ravel, Nadine
author_facet Torquet, Nicolas
Aimé, Pascaline
Messaoudi, Belkacem
Garcia, Samuel
Ey, Elodie
Gervais, Rémi
Julliard, A. Karyn
Ravel, Nadine
author_sort Torquet, Nicolas
collection PubMed
description Olfaction is determinant for the organization of rodent behavior. In a feeding context, rodents must quickly discriminate whether a nutrient can be ingested or whether it represents a potential danger to them. To understand the learning processes that support food choice, aversive olfactory learning and flavor appetitive learning have been extensively studied. In contrast, little is currently known about olfactory appetitive learning and its mechanisms. We designed a new paradigm to study conditioned olfactory preference in rats. After 8 days of exposure to a pair of odors (one paired with sucrose and the other with water), rats developed a strong and stable preference for the odor associated with the sucrose solution. A series of experiments were conducted to further analyze changes in reward value induced by this paradigm for both stimuli. As expected, the reward value of the reinforced odor changed positively. Interestingly, the reward value of the alternative odor decreased. This devaluation had an impact on further odor comparisons that the animal had to make. This result suggests that appetitive conditioning involving a comparison between two odors not only leads to a change in the reward value of the reinforced odor, but also induces a stable devaluation of the non-reinforced stimulus.
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spelling pubmed-40799822014-07-28 Olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors Torquet, Nicolas Aimé, Pascaline Messaoudi, Belkacem Garcia, Samuel Ey, Elodie Gervais, Rémi Julliard, A. Karyn Ravel, Nadine Front Behav Neurosci Neuroscience Olfaction is determinant for the organization of rodent behavior. In a feeding context, rodents must quickly discriminate whether a nutrient can be ingested or whether it represents a potential danger to them. To understand the learning processes that support food choice, aversive olfactory learning and flavor appetitive learning have been extensively studied. In contrast, little is currently known about olfactory appetitive learning and its mechanisms. We designed a new paradigm to study conditioned olfactory preference in rats. After 8 days of exposure to a pair of odors (one paired with sucrose and the other with water), rats developed a strong and stable preference for the odor associated with the sucrose solution. A series of experiments were conducted to further analyze changes in reward value induced by this paradigm for both stimuli. As expected, the reward value of the reinforced odor changed positively. Interestingly, the reward value of the alternative odor decreased. This devaluation had an impact on further odor comparisons that the animal had to make. This result suggests that appetitive conditioning involving a comparison between two odors not only leads to a change in the reward value of the reinforced odor, but also induces a stable devaluation of the non-reinforced stimulus. Frontiers Media S.A. 2014-07-03 /pmc/articles/PMC4079982/ /pubmed/25071486 http://dx.doi.org/10.3389/fnbeh.2014.00229 Text en Copyright © 2014 Torquet, Aimé, Messaoudi, Garcia, Ey, Gervais, Julliard and Ravel. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Torquet, Nicolas
Aimé, Pascaline
Messaoudi, Belkacem
Garcia, Samuel
Ey, Elodie
Gervais, Rémi
Julliard, A. Karyn
Ravel, Nadine
Olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors
title Olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors
title_full Olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors
title_fullStr Olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors
title_full_unstemmed Olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors
title_short Olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors
title_sort olfactory preference conditioning changes the reward value of reinforced and non-reinforced odors
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4079982/
https://www.ncbi.nlm.nih.gov/pubmed/25071486
http://dx.doi.org/10.3389/fnbeh.2014.00229
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