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Context and Time Matter: Effects of Emotion and Motivation on Episodic Memory Overtime

Previous studies have shown that compared with neutral cues, stimuli with positive and negative/stressful contexts or reward and punishment cues are remembered better. However, it is unclear whether the enhanced effect differs in emotion or motivation dimensions and the passage of time. We addressed...

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Detalles Bibliográficos
Autores principales: Sun, Qing, Gu, Simeng, Yang, Jiongjiong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5911310/
https://www.ncbi.nlm.nih.gov/pubmed/29849564
http://dx.doi.org/10.1155/2018/7051925
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author Sun, Qing
Gu, Simeng
Yang, Jiongjiong
author_facet Sun, Qing
Gu, Simeng
Yang, Jiongjiong
author_sort Sun, Qing
collection PubMed
description Previous studies have shown that compared with neutral cues, stimuli with positive and negative/stressful contexts or reward and punishment cues are remembered better. However, it is unclear whether the enhanced effect differs in emotion or motivation dimensions and the passage of time. We addressed these issues by manipulating different contextual cues for neutral words at different time intervals. In experiment 1, subjects were asked to learn words with picture contexts in positive, negative/stressful, and neutral valences and were tested by old/new word recognition and contextual judgment 10 min, 1 day, and 1 week later. In experiment 2, the reward and punishment motivations were manipulated by monetary cues during learning. Word recognition and contextual judgment were assessed 10 min, 1 day, 1 week, and 1 month after the study. Compared with negative and punishment conditions, the words in positive and reward contexts were recognized better at shorter intervals, which was associated with recollection process. In contrast, the words in negative and punishment contexts were recognized better at longer intervals, which was mainly associated with familiarity process. These results clarified how different dimensions of emotional and motivational contexts influence memory at short and long intervals and highlighted the role of contextual features in memory formation and consolidation.
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spelling pubmed-59113102018-05-30 Context and Time Matter: Effects of Emotion and Motivation on Episodic Memory Overtime Sun, Qing Gu, Simeng Yang, Jiongjiong Neural Plast Research Article Previous studies have shown that compared with neutral cues, stimuli with positive and negative/stressful contexts or reward and punishment cues are remembered better. However, it is unclear whether the enhanced effect differs in emotion or motivation dimensions and the passage of time. We addressed these issues by manipulating different contextual cues for neutral words at different time intervals. In experiment 1, subjects were asked to learn words with picture contexts in positive, negative/stressful, and neutral valences and were tested by old/new word recognition and contextual judgment 10 min, 1 day, and 1 week later. In experiment 2, the reward and punishment motivations were manipulated by monetary cues during learning. Word recognition and contextual judgment were assessed 10 min, 1 day, 1 week, and 1 month after the study. Compared with negative and punishment conditions, the words in positive and reward contexts were recognized better at shorter intervals, which was associated with recollection process. In contrast, the words in negative and punishment contexts were recognized better at longer intervals, which was mainly associated with familiarity process. These results clarified how different dimensions of emotional and motivational contexts influence memory at short and long intervals and highlighted the role of contextual features in memory formation and consolidation. Hindawi 2018-04-08 /pmc/articles/PMC5911310/ /pubmed/29849564 http://dx.doi.org/10.1155/2018/7051925 Text en Copyright © 2018 Qing Sun et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Sun, Qing
Gu, Simeng
Yang, Jiongjiong
Context and Time Matter: Effects of Emotion and Motivation on Episodic Memory Overtime
title Context and Time Matter: Effects of Emotion and Motivation on Episodic Memory Overtime
title_full Context and Time Matter: Effects of Emotion and Motivation on Episodic Memory Overtime
title_fullStr Context and Time Matter: Effects of Emotion and Motivation on Episodic Memory Overtime
title_full_unstemmed Context and Time Matter: Effects of Emotion and Motivation on Episodic Memory Overtime
title_short Context and Time Matter: Effects of Emotion and Motivation on Episodic Memory Overtime
title_sort context and time matter: effects of emotion and motivation on episodic memory overtime
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5911310/
https://www.ncbi.nlm.nih.gov/pubmed/29849564
http://dx.doi.org/10.1155/2018/7051925
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