Implicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making

Abstract Knowledge without awareness, or implicit knowledge, influences a variety of behaviors. It is unknown however, whether implicit knowledge of statistical structure informs visual perceptual decisions or whether explicit knowledge of statistical probabilities is required. Here, we measured vis...

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Autores principales:	V. N. Thakur, M. A. Basso, J. Ditterich, B. J. Knowlton
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d65e356bc5424271a3b8762f9a8b36ba
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id	oai:doaj.org-article:d65e356bc5424271a3b8762f9a8b36ba
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spelling	oai:doaj.org-article:d65e356bc5424271a3b8762f9a8b36ba2021-12-02T16:46:35ZImplicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making10.1038/s41598-021-95833-72045-2322https://doaj.org/article/d65e356bc5424271a3b8762f9a8b36ba2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95833-7https://doaj.org/toc/2045-2322Abstract Knowledge without awareness, or implicit knowledge, influences a variety of behaviors. It is unknown however, whether implicit knowledge of statistical structure informs visual perceptual decisions or whether explicit knowledge of statistical probabilities is required. Here, we measured visual decision-making performance using a novel task in which humans reported the orientation of two differently colored translational Glass patterns; each color associated with different orientation probabilities. The task design allowed us to assess participants’ ability to learn and use a general orientation prior as well as a color specific feature prior. Classifying decision-makers based on a questionnaire revealed that both implicit and explicit learners implemented a general orientation bias by adjusting the starting point of evidence accumulation in the drift diffusion model framework. Explicit learners additionally adjusted the drift rate offset. When subjects implemented a stimulus specific bias, they did so by adjusting primarily the drift rate offset. We conclude that humans can learn priors implicitly for perceptual decision-making and depending on awareness implement the priors using different mechanisms.V. N. ThakurM. A. BassoJ. DitterichB. J. KnowltonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q V. N. Thakur M. A. Basso J. Ditterich B. J. Knowlton Implicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making
description	Abstract Knowledge without awareness, or implicit knowledge, influences a variety of behaviors. It is unknown however, whether implicit knowledge of statistical structure informs visual perceptual decisions or whether explicit knowledge of statistical probabilities is required. Here, we measured visual decision-making performance using a novel task in which humans reported the orientation of two differently colored translational Glass patterns; each color associated with different orientation probabilities. The task design allowed us to assess participants’ ability to learn and use a general orientation prior as well as a color specific feature prior. Classifying decision-makers based on a questionnaire revealed that both implicit and explicit learners implemented a general orientation bias by adjusting the starting point of evidence accumulation in the drift diffusion model framework. Explicit learners additionally adjusted the drift rate offset. When subjects implemented a stimulus specific bias, they did so by adjusting primarily the drift rate offset. We conclude that humans can learn priors implicitly for perceptual decision-making and depending on awareness implement the priors using different mechanisms.
format	article
author	V. N. Thakur M. A. Basso J. Ditterich B. J. Knowlton
author_facet	V. N. Thakur M. A. Basso J. Ditterich B. J. Knowlton
author_sort	V. N. Thakur
title	Implicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making
title_short	Implicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making
title_full	Implicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making
title_fullStr	Implicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making
title_full_unstemmed	Implicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making
title_sort	implicit and explicit learning of bayesian priors differently impacts bias during perceptual decision-making
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d65e356bc5424271a3b8762f9a8b36ba
work_keys_str_mv	AT vnthakur implicitandexplicitlearningofbayesianpriorsdifferentlyimpactsbiasduringperceptualdecisionmaking AT mabasso implicitandexplicitlearningofbayesianpriorsdifferentlyimpactsbiasduringperceptualdecisionmaking AT jditterich implicitandexplicitlearningofbayesianpriorsdifferentlyimpactsbiasduringperceptualdecisionmaking AT bjknowlton implicitandexplicitlearningofbayesianpriorsdifferentlyimpactsbiasduringperceptualdecisionmaking
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Implicit and explicit learning of Bayesian priors differently impacts bias during perceptual decision-making

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