dc.contributor.author |
Albantakis, Larissa |
dc.contributor.author |
Branzi, Francesca Martina, 1984- |
dc.contributor.author |
Costa, Albert, 1970- |
dc.contributor.author |
Deco, Gustavo |
dc.date |
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.citation |
1932-6203 |
dc.identifier.citation |
http://dx.doi.org/10.1371/journal.pone.0043131. |
dc.identifier.uri |
http://hdl.handle.net/10230/25862 |
dc.format |
application/pdf |
dc.language.iso |
eng |
dc.publisher |
Public Library of Science |
dc.relation |
PLoS ONE. 2012;7(8):1-15 |
dc.relation |
info:eu-repo/grantAgreement/ES/2PN/CSD2007-00012 |
dc.relation |
info:eu-repo/grantAgreement/ES/3PN/FPU2009-2013 |
dc.relation |
info:eu-repo/grantAgreement/ES/3PN/SAF2010-16085 |
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.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by/4.0/ |
dc.title |
A multiple-choice task with changes of mind |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/semantics/publishedVersion |
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.abstract |
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. |