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Neural Dynamics of the Combined Discounting of Delay and Probability During the Evaluation of a Delayed Risky Reward

Delay discounting and probability discounting are two important processes, but in daily life there are many more situations that involve delayed risky outcomes. Although neuroscience research has extensively investigated delay and probability discounting in isolation, little research has explored th...

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Detalles Bibliográficos
Autores principales: Wang, Guangrong, Li, Jianbiao, Li, Shuaiqi, Zhu, Chengkang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7550637/
https://www.ncbi.nlm.nih.gov/pubmed/33132984
http://dx.doi.org/10.3389/fpsyg.2020.576460
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author Wang, Guangrong
Li, Jianbiao
Li, Shuaiqi
Zhu, Chengkang
author_facet Wang, Guangrong
Li, Jianbiao
Li, Shuaiqi
Zhu, Chengkang
author_sort Wang, Guangrong
collection PubMed
description Delay discounting and probability discounting are two important processes, but in daily life there are many more situations that involve delayed risky outcomes. Although neuroscience research has extensively investigated delay and probability discounting in isolation, little research has explored the neural correlates of the combined discounting of delay and probability. Using the event-related brain potentials (ERPs) technique, we designed a novel paradigm to investigate neural processes related to the combined discounting of delay and probability during the evaluation of a delayed risky reward. ERP results suggested distinct temporal dynamics for delay and probability processing during combined discounting. Both the early frontal P200 and the N2 reflected only probability, not delay, while the parietal P300 was sensitive to both probability and delay. Furthermore, the late positive potential (LPP) was sensitive to probability, but insensitive to delay. These results suggest that probability has a prolonged modulatory effect on reward evaluation in the information processing stream. These findings contribute to an understanding of the neural processes underlying the combined discounting of delay and probability. The limitation of this study is to only consider four delay and probability combinations. Future studies can explore the combined discounting of more probability and delay combinations to further test the robustness of the conclusion.
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spelling pubmed-75506372020-10-29 Neural Dynamics of the Combined Discounting of Delay and Probability During the Evaluation of a Delayed Risky Reward Wang, Guangrong Li, Jianbiao Li, Shuaiqi Zhu, Chengkang Front Psychol Psychology Delay discounting and probability discounting are two important processes, but in daily life there are many more situations that involve delayed risky outcomes. Although neuroscience research has extensively investigated delay and probability discounting in isolation, little research has explored the neural correlates of the combined discounting of delay and probability. Using the event-related brain potentials (ERPs) technique, we designed a novel paradigm to investigate neural processes related to the combined discounting of delay and probability during the evaluation of a delayed risky reward. ERP results suggested distinct temporal dynamics for delay and probability processing during combined discounting. Both the early frontal P200 and the N2 reflected only probability, not delay, while the parietal P300 was sensitive to both probability and delay. Furthermore, the late positive potential (LPP) was sensitive to probability, but insensitive to delay. These results suggest that probability has a prolonged modulatory effect on reward evaluation in the information processing stream. These findings contribute to an understanding of the neural processes underlying the combined discounting of delay and probability. The limitation of this study is to only consider four delay and probability combinations. Future studies can explore the combined discounting of more probability and delay combinations to further test the robustness of the conclusion. Frontiers Media S.A. 2020-09-29 /pmc/articles/PMC7550637/ /pubmed/33132984 http://dx.doi.org/10.3389/fpsyg.2020.576460 Text en Copyright © 2020 Wang, Li, Li and Zhu. http://creativecommons.org/licenses/by/4.0/ 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) and the copyright owner(s) 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 Psychology
Wang, Guangrong
Li, Jianbiao
Li, Shuaiqi
Zhu, Chengkang
Neural Dynamics of the Combined Discounting of Delay and Probability During the Evaluation of a Delayed Risky Reward
title Neural Dynamics of the Combined Discounting of Delay and Probability During the Evaluation of a Delayed Risky Reward
title_full Neural Dynamics of the Combined Discounting of Delay and Probability During the Evaluation of a Delayed Risky Reward
title_fullStr Neural Dynamics of the Combined Discounting of Delay and Probability During the Evaluation of a Delayed Risky Reward
title_full_unstemmed Neural Dynamics of the Combined Discounting of Delay and Probability During the Evaluation of a Delayed Risky Reward
title_short Neural Dynamics of the Combined Discounting of Delay and Probability During the Evaluation of a Delayed Risky Reward
title_sort neural dynamics of the combined discounting of delay and probability during the evaluation of a delayed risky reward
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7550637/
https://www.ncbi.nlm.nih.gov/pubmed/33132984
http://dx.doi.org/10.3389/fpsyg.2020.576460
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