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Striatal activation reflects urgency in perceptual decision making

Van Maanen, Leendert and Fontanesi, Laura and Hawkins, Guy E. and Forstmann, Birte U.. (2016) Striatal activation reflects urgency in perceptual decision making. NeuroImage, 139. pp. 294-303.

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Official URL: https://edoc.unibas.ch/59599/

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Abstract

Deciding between multiple courses of action often entails an increasing need to do something as time passes - a sense of urgency. This notion of urgency is not incorporated in standard theories of speeded  decision making that assume information is accumulated until a critical fixed threshold is reached. Yet, it is hypothesized in novel theoretical models of decision making. In two experiments, we investigated the behavioral and neural evidence for an “urgency signal” in human perceptual decision making. Experiment 1 found that as the duration of the decision making process increased, participants made a choice based on less evidence for the selected option. Experiment 2 replicated this finding, and additionally found that variability in this effect across participants covaried with activation in the striatum . We conclude that  individual differences in susceptibility to urgency are reflected by striatal activation. By dynamically updating a response threshold, the striatum is involved in signaling urgency in humans.
Faculties and Departments:07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Sozial-, Wirtschafts- und Entscheidungspsychologie > Decision Neuroscience (Gluth)
07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Sozial-, Wirtschafts- und Entscheidungspsychologie > Economic Psychology (Rieskamp)
UniBasel Contributors:Fontanesi, Laura
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:1053-8119
e-ISSN:1095-9572
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:10 Oct 2018 12:51
Deposited On:10 Oct 2018 12:51

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