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Serial, parallel and hierarchical decision making in primates

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2017-Zylberberg-Serial, parallel and hierarchical decision making in primates.pdf (778.1Kb)
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Author/s:
Zylberberg, Ariel
Lorteije, Jeannette AM
Ouellette, Brian G
Zeeuw, Chris I De
Sigman, Mariano
Roelfsema, Pieter
Date:
2017-06-26
Abstract
he study of decision-making has mainly focused on isolated decisions where choices are associated with motor actions. However, problem-solving often involves considering a hierarchy of sub-decisions. In a recent study (Lorteije et al. 2015), we reported behavioral and neuronal evidence for hierarchical decision making in a task with a small decision tree. We observed a first phase of parallel evidence integration for multiple sub-decisions, followed by a phase in which the overall strategy formed. It has been suggested that a 'flat' competition between the ultimate motor actions might also explain these results. A reanalysis of the data does not support the critical predictions of flat models. We also examined the time-course of decision making in other, related tasks and report conditions where evidence integration for successive decisions is decoupled, which excludes flat models. We conclude that the flexibility of decision-making implies that the strategies are genuinely hierarchical.
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https://doi.org/10.7554/eLife.17331.001
https://repositorio.utdt.edu/handle/20.500.13098/11058
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Página de ayuda al investigador
Horarios de atención
Campus Alcorta
Av. Figueroa Alcorta 7350 (C1428BCW)
Sáenz Valiente 1010 (C1428BIJ)
Ciudad de Buenos Aires, Argentina
P: (54 11) 5169 7000