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dc.rights.licensehttps://creativecommons.org/licenses/by/4.0/es_AR
dc.contributor.authorSigman, Marianoes_AR
dc.contributor.authorDehaene, Stanislases_AR
dc.date.accessioned2018-08-18T17:30:23Z
dc.date.available2018-08-18T17:30:23Z
dc.date.issued2006-06-27
dc.identifierdoi: 10.1371/journal.pbio.0040220es_AR
dc.identifier.urihttps://doi.org/10.1371/journal.pbio.0040220es_AR
dc.identifier.urihttps://repositorio.utdt.edu/handle/utdt/11088
dc.description.abstractWhy 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.es_AR
dc.format.extent12 p.es_AR
dc.format.mediumapplication/pdfes_AR
dc.languageenges_AR
dc.relation.ispartofPLoS Biology 4(7), (2008). ISSN: 1545-7885es_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.titleDynamics of the central bottleneck : dual-task and task uncertaintyes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.subject.keywordCognitiones_AR
dc.subject.keywordAttentiones_AR
dc.subject.keywordDecision makinges_AR
dc.subject.keywordFingerses_AR
dc.subject.keywordExperimental designes_AR
dc.subject.keywordInertiaes_AR
dc.subject.keywordVisiones_AR
dc.subject.keywordAnalysis of variancees_AR
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_AR
dc.description.filiationFil: Sigman, Mariano. Unité INSERM 562, Cognitive Neuroimaging, Service Hospitalier Frédéric Joliot, CEA/DRM/DSV, Orsay, France.es_AR
dc.description.filiationFil: Dehaene, Stanislas. Unité INSERM 562, Cognitive Neuroimaging, Service Hospitalier Frédéric Joliot, CEA/DRM/DSV, Orsay, France. Collège de France, Paris, Francees_AR


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