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Ongoing, rational calibration of reward-driven perceptual biases

Decision-making is often interpreted in terms of normative computations that maximize a particular reward function for stable, average behaviors. Aberrations from the reward-maximizing solutions, either across subjects or across different sessions for the same subject, are often interpreted as refle...

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Detalles Bibliográficos
Autores principales: Fan, Yunshu, Gold, Joshua I, Ding, Long
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6203438/
https://www.ncbi.nlm.nih.gov/pubmed/30303484
http://dx.doi.org/10.7554/eLife.36018
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author Fan, Yunshu
Gold, Joshua I
Ding, Long
author_facet Fan, Yunshu
Gold, Joshua I
Ding, Long
author_sort Fan, Yunshu
collection PubMed
description Decision-making is often interpreted in terms of normative computations that maximize a particular reward function for stable, average behaviors. Aberrations from the reward-maximizing solutions, either across subjects or across different sessions for the same subject, are often interpreted as reflecting poor learning or physical limitations. Here we show that such aberrations may instead reflect the involvement of additional satisficing and heuristic principles. For an asymmetric-reward perceptual decision-making task, three monkeys produced adaptive biases in response to changes in reward asymmetries and perceptual sensitivity. Their choices and response times were consistent with a normative accumulate-to-bound process. However, their context-dependent adjustments to this process deviated slightly but systematically from the reward-maximizing solutions. These adjustments were instead consistent with a rational process to find satisficing solutions based on the gradient of each monkey’s reward-rate function. These results suggest new dimensions for assessing the rational and idiosyncratic aspects of flexible decision-making.
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spelling pubmed-62034382018-11-05 Ongoing, rational calibration of reward-driven perceptual biases Fan, Yunshu Gold, Joshua I Ding, Long eLife Neuroscience Decision-making is often interpreted in terms of normative computations that maximize a particular reward function for stable, average behaviors. Aberrations from the reward-maximizing solutions, either across subjects or across different sessions for the same subject, are often interpreted as reflecting poor learning or physical limitations. Here we show that such aberrations may instead reflect the involvement of additional satisficing and heuristic principles. For an asymmetric-reward perceptual decision-making task, three monkeys produced adaptive biases in response to changes in reward asymmetries and perceptual sensitivity. Their choices and response times were consistent with a normative accumulate-to-bound process. However, their context-dependent adjustments to this process deviated slightly but systematically from the reward-maximizing solutions. These adjustments were instead consistent with a rational process to find satisficing solutions based on the gradient of each monkey’s reward-rate function. These results suggest new dimensions for assessing the rational and idiosyncratic aspects of flexible decision-making. eLife Sciences Publications, Ltd 2018-10-10 /pmc/articles/PMC6203438/ /pubmed/30303484 http://dx.doi.org/10.7554/eLife.36018 Text en © 2018, Fan et al http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Neuroscience
Fan, Yunshu
Gold, Joshua I
Ding, Long
Ongoing, rational calibration of reward-driven perceptual biases
title Ongoing, rational calibration of reward-driven perceptual biases
title_full Ongoing, rational calibration of reward-driven perceptual biases
title_fullStr Ongoing, rational calibration of reward-driven perceptual biases
title_full_unstemmed Ongoing, rational calibration of reward-driven perceptual biases
title_short Ongoing, rational calibration of reward-driven perceptual biases
title_sort ongoing, rational calibration of reward-driven perceptual biases
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6203438/
https://www.ncbi.nlm.nih.gov/pubmed/30303484
http://dx.doi.org/10.7554/eLife.36018
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