Parsing a perceptual decision into a sequence of moments of thought

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Theoretical, computational, and experimental studies have converged to a model of decision-making in which sensory evidence is stochastically integrated to a threshold, implementing a shift from an analog to a discrete form of computation. Understanding how this process can be chained and sequenced...

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Autores principales:	Graziano, M., Polosecki, P., Shalom, D.E., Sigman, M.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2011
Materias:	Decision-making Mental algorithms Sequential operations Vision adult article chronosequence cognition decision making female human human experiment male mental performance mental task moment of thought motor performance thinking time perception
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_16625145_v5_n_p_Graziano
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paperaa:paper_16625145_v5_n_p_Graziano2023-06-12T16:50:51Z Parsing a perceptual decision into a sequence of moments of thought Front. Integr. Neurosci. 2011;5 Graziano, M. Polosecki, P. Shalom, D.E. Sigman, M. Decision-making Mental algorithms Sequential operations Vision adult article chronosequence cognition decision making female human human experiment male mental performance mental task moment of thought motor performance thinking time perception Theoretical, computational, and experimental studies have converged to a model of decision-making in which sensory evidence is stochastically integrated to a threshold, implementing a shift from an analog to a discrete form of computation. Understanding how this process can be chained and sequenced - as virtually all real-life tasks involve a sequence of decisions - remains an open question in neuroscience. We reasoned that incorporating a virtual continuum of possible behavioral outcomes in a simple decision task - a fundamental ingredient of real-life decision-making - should result in a progressive sequential approximation to the correct response. We used real-time tracking of motor action in a decision task, as a measure of cognitive states reflecting an internal decision process. We found that response trajectories were spontaneously segmented into a discrete sequence of explorations separated by brief stops (about 200ms) - which remained unconscious to the participants. The characteristics of these stops were indicative of a decision process - a "moment of thought": their duration correlated with the difficulty of the decision and with the efficiency of the subsequent exploration. Our findings suggest that simple navigation in an abstract space involves a discrete sequence of explorations and stops and, moreover, that these stops reveal a fingerprint of moments of thought. © 2011 Graziano, Polosecki, Shalom and Sigman. Fil:Graziano, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sigman, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_16625145_v5_n_p_Graziano
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Inglés
orig_language_str_mv	eng
topic	Decision-making Mental algorithms Sequential operations Vision adult article chronosequence cognition decision making female human human experiment male mental performance mental task moment of thought motor performance thinking time perception
spellingShingle	Decision-making Mental algorithms Sequential operations Vision adult article chronosequence cognition decision making female human human experiment male mental performance mental task moment of thought motor performance thinking time perception Graziano, M. Polosecki, P. Shalom, D.E. Sigman, M. Parsing a perceptual decision into a sequence of moments of thought
topic_facet	Decision-making Mental algorithms Sequential operations Vision adult article chronosequence cognition decision making female human human experiment male mental performance mental task moment of thought motor performance thinking time perception
description	Theoretical, computational, and experimental studies have converged to a model of decision-making in which sensory evidence is stochastically integrated to a threshold, implementing a shift from an analog to a discrete form of computation. Understanding how this process can be chained and sequenced - as virtually all real-life tasks involve a sequence of decisions - remains an open question in neuroscience. We reasoned that incorporating a virtual continuum of possible behavioral outcomes in a simple decision task - a fundamental ingredient of real-life decision-making - should result in a progressive sequential approximation to the correct response. We used real-time tracking of motor action in a decision task, as a measure of cognitive states reflecting an internal decision process. We found that response trajectories were spontaneously segmented into a discrete sequence of explorations separated by brief stops (about 200ms) - which remained unconscious to the participants. The characteristics of these stops were indicative of a decision process - a "moment of thought": their duration correlated with the difficulty of the decision and with the efficiency of the subsequent exploration. Our findings suggest that simple navigation in an abstract space involves a discrete sequence of explorations and stops and, moreover, that these stops reveal a fingerprint of moments of thought. © 2011 Graziano, Polosecki, Shalom and Sigman.
format	Artículo Artículo publishedVersion
author	Graziano, M. Polosecki, P. Shalom, D.E. Sigman, M.
author_facet	Graziano, M. Polosecki, P. Shalom, D.E. Sigman, M.
author_sort	Graziano, M.
title	Parsing a perceptual decision into a sequence of moments of thought
title_short	Parsing a perceptual decision into a sequence of moments of thought
title_full	Parsing a perceptual decision into a sequence of moments of thought
title_fullStr	Parsing a perceptual decision into a sequence of moments of thought
title_full_unstemmed	Parsing a perceptual decision into a sequence of moments of thought
title_sort	parsing a perceptual decision into a sequence of moments of thought
publishDate	2011
url	http://hdl.handle.net/20.500.12110/paper_16625145_v5_n_p_Graziano
work_keys_str_mv	AT grazianom parsingaperceptualdecisionintoasequenceofmomentsofthought AT poloseckip parsingaperceptualdecisionintoasequenceofmomentsofthought AT shalomde parsingaperceptualdecisionintoasequenceofmomentsofthought AT sigmanm parsingaperceptualdecisionintoasequenceofmomentsofthought
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Parsing a perceptual decision into a sequence of moments of thought

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