Use of Electroencephalography for the Study of Gain–Loss Asymmetry in Intertemporal Decision-Making

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Abstract

Intertemporal decision-making refers to the process whereby an individual evaluates and selects among competing alternatives based on the cost and benefit over time. While most previous studies on temporal discounting focused their attention on the gain context, only a few explored the loss context. In the present study, both the event-related potentials (ERPs) and the graph theory analysis were employed to investigate the differences in intertemporal decision-making between the gain and loss frameworks. Our results suggested that participants preferred the short latency/small amount (SS) alternatives and exhibited a smaller discount rate in a loss context compared to a gain framework. Furthermore, our ERP data indicated that the P200 component could constitute a preliminary assessment of the decision-making, related to gain and loss. In contrast, the N2 component was associated with negative emotions and showed significantly bigger amplitudes in the loss context, when compared to the gain framework. Further analyses of brain networks suggested the loss decision-making brain network to have a larger small-worldness index given individuals' loss aversion. Taken together, intertemploral decision-making in a loss context was accompanied by a greater brain response due to the negative emotions linked to loss aversion.

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Zhao, L., Shi, Z., Zheng, Q., Chu, H., Xu, L., & Hu, F. (2018). Use of Electroencephalography for the Study of Gain–Loss Asymmetry in Intertemporal Decision-Making. Frontiers in Neuroscience, 12. https://doi.org/10.3389/fnins.2018.00984

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