Show simple item record Albantakis, Larissa Branzi, Francesca Martina, 1984- Costa, Albert, 1970- Deco, Gustavo 2016-02-17T15:29:12Z 2016-02-17T15:29:12Z 2012
dc.identifier.citation Albantakis L, Branzi FM, Costa A, Deco G. A multiple-choice task with changes of mind. PLoS ONE. 2012;7(8):1-15. DOI: 10.1371/journal.pone.0043131.
dc.identifier.issn 1932-6203
dc.description.abstract The role of changes of mind and multiple choices has recently received increased attention in the study of perceptual/ndecision-making. Previously, these extensions to standard two-alternative tasks have been studied separately. Here we/nexplored how changes of mind depend on the number of choice-alternatives. To this end, we tested 14 human subjects on/na 2- and 4-alternative direction-discrimination task. Changes of mind in the participants’ movement trajectories could be/nobserved for two and for four choice alternatives. With fewer alternatives, participants responded faster and more/naccurately. The frequency of changes of mind, however, did not significantly differ for the different numbers of choice/nalternatives. Nevertheless, mind-changing improved the participants’ final performance, particularly for intermediate/ndifficulty levels, in both experimental conditions. Moreover, the mean reaction times of individual participants were/nnegatively correlated with their overall tendency to make changes of mind. We further reproduced these findings with a/nmulti-alternative attractor model for decision-making, while a simple race model could not account for the experimental/ndata. Our experiment, combined with the theoretical models allowed us to shed light on: (1) the differences in choice/nbehavior between two and four alternatives, (2) the differences between the data of our human subjects and previous/nmonkey data, (3) individual differences between participants, and (4) the inhibitory interaction between neural/nrepresentations of choice alternatives.
dc.description.sponsorship This work was supported by the “CONSOLIDER-INGENIO 2010” Programme in the “Brainglot” project (Bilingualism and Cognitive Neuroscience) CSD2007-00012. FMB was supported by a predoctoral fellowship from the Spanish Government (FPU 2009-2013). GD was further supported by the Spanish Ministry of Science in the project “Communication and Information Processing Between Cortical Circuits: Oscillations and Plasticity” SAF2010-16085. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Public Library of Science
dc.relation.ispartof PLoS ONE. 2012;7(8):1-15
dc.rights © 2012 Albantakis et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits/nunrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.title A multiple-choice task with changes of mind
dc.type info:eu-repo/semantics/article
dc.relation.projectID info:eu-repo/grantAgreement/ES/2PN/CSD2007-00012
dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/FPU2009-2013
dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/SAF2010-16085
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion


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