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Evidence of structure and persistence in motivational attraction to serial Pavlovian cues

Sign-tracking is a form of autoshaping where animals develop conditioned responding directed toward stimuli predictive of an outcome even though the outcome is not contingent on the animal's behavior. Sign-tracking behaviors are thought to arise out of the attribution of incentive salience (i.e...

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Detalles Bibliográficos
Autores principales: Smedley, Elizabeth B., Smith, Kyle S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cold Spring Harbor Laboratory Press 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5772391/
https://www.ncbi.nlm.nih.gov/pubmed/29339559
http://dx.doi.org/10.1101/lm.046599.117
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author Smedley, Elizabeth B.
Smith, Kyle S.
author_facet Smedley, Elizabeth B.
Smith, Kyle S.
author_sort Smedley, Elizabeth B.
collection PubMed
description Sign-tracking is a form of autoshaping where animals develop conditioned responding directed toward stimuli predictive of an outcome even though the outcome is not contingent on the animal's behavior. Sign-tracking behaviors are thought to arise out of the attribution of incentive salience (i.e., motivational value) to reward-predictive cues. It is not known how incentive salience would be attributed to serially occurring cues, despite cues often occurring in a sequence in the real world as reward approaches. The experiments presented here demonstrate that reward-proximal cue responding is not altered by the presence of a distal reward cue (Experiment 1), and similarly that reward-distal cue responding which animals favor, is not altered by the presence of a reward-proximal cue (Experiment 2). Extinction of reward-proximal cues after training of the serial sequence leads to a generalized reduction in lever responding (Experiment 3). Together, we show that both Pavlovian serial lever cues acquire motivational value. These experiments also provide support to the notion that sign-tracking responses are insensitive to changes in outcome value, and that responding to serial cues creates a distinct context for outcome value.
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spelling pubmed-57723912019-02-01 Evidence of structure and persistence in motivational attraction to serial Pavlovian cues Smedley, Elizabeth B. Smith, Kyle S. Learn Mem Research Sign-tracking is a form of autoshaping where animals develop conditioned responding directed toward stimuli predictive of an outcome even though the outcome is not contingent on the animal's behavior. Sign-tracking behaviors are thought to arise out of the attribution of incentive salience (i.e., motivational value) to reward-predictive cues. It is not known how incentive salience would be attributed to serially occurring cues, despite cues often occurring in a sequence in the real world as reward approaches. The experiments presented here demonstrate that reward-proximal cue responding is not altered by the presence of a distal reward cue (Experiment 1), and similarly that reward-distal cue responding which animals favor, is not altered by the presence of a reward-proximal cue (Experiment 2). Extinction of reward-proximal cues after training of the serial sequence leads to a generalized reduction in lever responding (Experiment 3). Together, we show that both Pavlovian serial lever cues acquire motivational value. These experiments also provide support to the notion that sign-tracking responses are insensitive to changes in outcome value, and that responding to serial cues creates a distinct context for outcome value. Cold Spring Harbor Laboratory Press 2018-02 /pmc/articles/PMC5772391/ /pubmed/29339559 http://dx.doi.org/10.1101/lm.046599.117 Text en © 2018 Smedley and Smith; Published by Cold Spring Harbor Laboratory Press http://creativecommons.org/licenses/by-nc/4.0/ This article is distributed exclusively by Cold Spring Harbor Laboratory Press for the first 12 months after the full-issue publication date (see http://learnmem.cshlp.org/site/misc/terms.xhtml). After 12 months, it is available under a Creative Commons License (Attribution-NonCommercial 4.0 International), as described at http://creativecommons.org/licenses/by-nc/4.0/.
spellingShingle Research
Smedley, Elizabeth B.
Smith, Kyle S.
Evidence of structure and persistence in motivational attraction to serial Pavlovian cues
title Evidence of structure and persistence in motivational attraction to serial Pavlovian cues
title_full Evidence of structure and persistence in motivational attraction to serial Pavlovian cues
title_fullStr Evidence of structure and persistence in motivational attraction to serial Pavlovian cues
title_full_unstemmed Evidence of structure and persistence in motivational attraction to serial Pavlovian cues
title_short Evidence of structure and persistence in motivational attraction to serial Pavlovian cues
title_sort evidence of structure and persistence in motivational attraction to serial pavlovian cues
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5772391/
https://www.ncbi.nlm.nih.gov/pubmed/29339559
http://dx.doi.org/10.1101/lm.046599.117
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