Dynamics of the central bottleneck : dual-task and task uncertainty

Why is the human brain fundamentally limited when attempting to execute two tasks at the same time or in close succession? Two classical paradigms, psychological refractory period (PRP) and task switching, have independently approached this issue, making significant advances in our understanding of...

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Autores principales: Sigman, Mariano, Dehaene, Stanislas
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2018
Materias:
Cognition
Attention
Decision making
Fingers
Experimental design
Inertia
Vision
Analysis of variance
Acceso en línea:https://doi.org/10.1371/journal.pbio.0040220
https://repositorio.utdt.edu/handle/20.500.13098/11088
Aporte de:
Repositorio Digital Universidad Torcuato Di Tella de Universidad Torcuato Di Tella
id I57-R16320.500.13098-11088
record_format dspace
institution Universidad Torcuato Di Tella
institution_str I-57
repository_str R-163
collection Repositorio Digital Universidad Torcuato Di Tella
language Inglés
orig_language_str_mv eng
topic Cognition
Attention
Decision making
Fingers
Experimental design
Inertia
Vision
Analysis of variance
spellingShingle Cognition
Attention
Decision making
Fingers
Experimental design
Inertia
Vision
Analysis of variance
Sigman, Mariano
Dehaene, Stanislas
Dynamics of the central bottleneck : dual-task and task uncertainty
description Why is the human brain fundamentally limited when attempting to execute two tasks at the same time or in close succession? Two classical paradigms, psychological refractory period (PRP) and task switching, have independently approached this issue, making significant advances in our understanding of the architecture of cognition. Yet, there is an apparent contradiction between the conclusions derived from these two paradigms. The PRP paradigm, on the one hand, suggests that the simultaneous execution of two tasks is limited solely by a passive structural bottleneck in which the tasks are executed on a first-come, first-served basis. The task-switching paradigm, on the other hand, argues that switching back and forth between task configurations must be actively controlled by a central executive system (the system controlling voluntary, planned, and flexible action). Here we have explicitly designed an experiment mixing the essential ingredients of both paradigms: task uncertainty and task simultaneity. In addition to a central bottleneck, we obtain evidence for active processes of task setting (planning of the appropriate sequence of actions) and task disengaging (suppression of the plan set for the first task in order to proceed with the next one). Our results clarify the chronometric relations between these central components of dual-task processing, and in particular whether they operate serially or in parallel. On this basis, we propose a hierarchical model of cognitive architecture that provides a synthesis of task-switching and PRP paradigms.
format Artículo
publishedVersion
author Sigman, Mariano
Dehaene, Stanislas
author_facet Sigman, Mariano
Dehaene, Stanislas
author_sort Sigman, Mariano
title Dynamics of the central bottleneck : dual-task and task uncertainty
title_short Dynamics of the central bottleneck : dual-task and task uncertainty
title_full Dynamics of the central bottleneck : dual-task and task uncertainty
title_fullStr Dynamics of the central bottleneck : dual-task and task uncertainty
title_full_unstemmed Dynamics of the central bottleneck : dual-task and task uncertainty
title_sort dynamics of the central bottleneck : dual-task and task uncertainty
publishDate 2018
url https://doi.org/10.1371/journal.pbio.0040220
https://repositorio.utdt.edu/handle/20.500.13098/11088
work_keys_str_mv AT sigmanmariano dynamicsofthecentralbottleneckdualtaskandtaskuncertainty
AT dehaenestanislas dynamicsofthecentralbottleneckdualtaskandtaskuncertainty
bdutipo_str Repositorios
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