title: Linking brain electrical signals elicited by current outcomes with future risk decision-making.
abstract: The experience of current outcomes influences future decisions in various ways. The neural mechanism of this phenomenon may help to clarify the determinants of decision-making. In this study, thirty-nine young adults finished a risky gambling task by choosing between a high- and a low-risk option in each trial during electroencephalographic data collection. We found that risk-taking strategies significantly modulated mean amplitudes of the event-related potential (ERP) component P3, particularly at the central scalp. The event-related spectral perturbation and the inter-trial coherence measurements of the independent component analysis (ICA) data indicated that the "stay" vs. "switch" electrophysiological difference associated with subsequent decision-making was mainly due to fronto-central theta and left/right mu independent components. Event-related cross-coherence results suggested that the neural information of action monitoring and updating emerged in the fronto-central cortex and propagated to sensorimotor area for further behavior adjustment. Based on these findings of ERP and event-related oscillation (ERO) measures, we propose a neural model of the influence of current outcomes on future decisions.
authors.affiliation: Institute of Affective and Social Neuroscience, School of Medicine, Shenzhen University Shenzhen, China.
authors.forename: Dandan
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences Beijing, China.
authors.forename: Ruolei
authors.initials: R
authors.lastname: Gu
authors.affiliation: Department of Behavioral Science, University of Kentucky College of Medicine Lexington, KY, USA.
authors.forename: Lucas S
authors.initials: LS
authors.lastname: Broster
authors.affiliation: Department of Behavioral Science, University of Kentucky College of Medicine Lexington, KY, USA.
authors.forename: Yang
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: Department of Psychology, School of Psychology, Liaoning Normal University Dalian, China.
authors.forename: Wenbo
authors.initials: W
authors.lastname: Luo
authors.affiliation: Institute of Affective and Social Neuroscience, School of Medicine, Shenzhen University Shenzhen, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Institute of Affective and Social Neuroscience, School of Medicine, Shenzhen University Shenzhen, China.
authors.forename: Yue-Jia
authors.initials: YJ
authors.lastname: Luo
keywords: decision-making; event-related oscillation; event-related potential; independent component analysis; outcome evaluation; time-frequency analysis