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Sweet reward increases implicit discrimination of similar odors

Stimuli associated with emotional events signal the presence of potentially relevant situations, thus learning to rapidly identify this kind of stimuli can be highly beneficial. It has been demonstrated that individuals acquire a better perceptual representation of stimuli associated with negative a...

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Autores principales: Pool, Eva, Delplanque, Sylvain, Porcherot, Christelle, Jenkins, Tatiana, Cayeux, Isabelle, Sander, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4018568/
https://www.ncbi.nlm.nih.gov/pubmed/24834039
http://dx.doi.org/10.3389/fnbeh.2014.00158
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author Pool, Eva
Delplanque, Sylvain
Porcherot, Christelle
Jenkins, Tatiana
Cayeux, Isabelle
Sander, David
author_facet Pool, Eva
Delplanque, Sylvain
Porcherot, Christelle
Jenkins, Tatiana
Cayeux, Isabelle
Sander, David
author_sort Pool, Eva
collection PubMed
description Stimuli associated with emotional events signal the presence of potentially relevant situations, thus learning to rapidly identify this kind of stimuli can be highly beneficial. It has been demonstrated that individuals acquire a better perceptual representation of stimuli associated with negative and threatening emotional events. Here we investigated whether the same process occurs for stimuli associated with positive and rewarding emotional events. We used an appetitive Pavlovian conditioning paradigm during which one of two perceptually non-distinguishable odors was associated with a rewarding taste (i.e., chocolate). We investigated whether appetitive conditioning could improve the recognition of the odor associated with the reward, rendering it discriminable from its similar version that was never associated with the reward. Results revealed a dissociation between explicit perception and physiological reactions. Although participants were not able to explicitly perceive a difference, they reacted faster, inhaled more and had higher skin conductance responses when confronted with the reward-associated odor compared to its similar version that was never associated with the reward. Our findings have demonstrated that positive emotional associations can improve the implicit perceptual representation of odors, by triggering different physiological responses to odors that do not seem to be otherwise distinguishable.
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spelling pubmed-40185682014-05-15 Sweet reward increases implicit discrimination of similar odors Pool, Eva Delplanque, Sylvain Porcherot, Christelle Jenkins, Tatiana Cayeux, Isabelle Sander, David Front Behav Neurosci Neuroscience Stimuli associated with emotional events signal the presence of potentially relevant situations, thus learning to rapidly identify this kind of stimuli can be highly beneficial. It has been demonstrated that individuals acquire a better perceptual representation of stimuli associated with negative and threatening emotional events. Here we investigated whether the same process occurs for stimuli associated with positive and rewarding emotional events. We used an appetitive Pavlovian conditioning paradigm during which one of two perceptually non-distinguishable odors was associated with a rewarding taste (i.e., chocolate). We investigated whether appetitive conditioning could improve the recognition of the odor associated with the reward, rendering it discriminable from its similar version that was never associated with the reward. Results revealed a dissociation between explicit perception and physiological reactions. Although participants were not able to explicitly perceive a difference, they reacted faster, inhaled more and had higher skin conductance responses when confronted with the reward-associated odor compared to its similar version that was never associated with the reward. Our findings have demonstrated that positive emotional associations can improve the implicit perceptual representation of odors, by triggering different physiological responses to odors that do not seem to be otherwise distinguishable. Frontiers Media S.A. 2014-05-06 /pmc/articles/PMC4018568/ /pubmed/24834039 http://dx.doi.org/10.3389/fnbeh.2014.00158 Text en Copyright © 2014 Pool, Delplanque, Porcherot, Jenkins, Cayeux and Sander. 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
Pool, Eva
Delplanque, Sylvain
Porcherot, Christelle
Jenkins, Tatiana
Cayeux, Isabelle
Sander, David
Sweet reward increases implicit discrimination of similar odors
title Sweet reward increases implicit discrimination of similar odors
title_full Sweet reward increases implicit discrimination of similar odors
title_fullStr Sweet reward increases implicit discrimination of similar odors
title_full_unstemmed Sweet reward increases implicit discrimination of similar odors
title_short Sweet reward increases implicit discrimination of similar odors
title_sort sweet reward increases implicit discrimination of similar odors
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4018568/
https://www.ncbi.nlm.nih.gov/pubmed/24834039
http://dx.doi.org/10.3389/fnbeh.2014.00158
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