Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/176998
Title: | Visual-reward driven changes of movement during action execution |
Author: | Martí Marca, Angela Deco, Gustavo Cos Aguilera, Ignasi |
Keywords: | Presa de decisions Temps de reacció (Psicologia) Decision making Reaction time (Psychology) |
Issue Date: | 23-Sep-2020 |
Publisher: | Nature Publishing Group |
Abstract: | Motor decision-making is often described as a sequential process, beginning with the assessment of available options and leading to the execution of a selected movement. While this view is likely to be accurate for decisions requiring significant deliberation, it would seem unfit for choices between movements in dynamic environments. In this study, we examined whether and how non-selected motor options may be considered post-movement onset. We hypothesized that a change in reward at any point in time implies a dynamic reassessment of options, even after an initial decision has been made. To test this, we performed a decision-making task in which human participants were instructed to execute a reaching movement from an origin to a rectangular target to attain a reward. Reward depended on arrival precision and on the specific distribution of reward presented along the target. On a third of trials, we changed the initial reward distribution post-movement onset. Our results indicated that participants frequently change their initially selected movements when a change is associated with an increase in reward. This process occurs quicker than overall, average reaction times. Finally, changes in movement are not only dependent on reward but also on the current state of the motor apparatus. |
Note: | Reproducció del document publicat a: https://doi.org/10.1038/s41598-020-72220-2 |
It is part of: | Scientific Reports, 2020, vol. 10, num. 1, p. 15527 |
URI: | http://hdl.handle.net/2445/176998 |
Related resource: | https://doi.org/10.1038/s41598-020-72220-2 |
ISSN: | 2045-2322 |
Appears in Collections: | Articles publicats en revistes (Matemàtiques i Informàtica) Publicacions de projectes de recerca finançats per la UE |
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