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. 2016 Jun 13;7:877. doi: 10.3389/fpsyg.2016.00877

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Copyright © 2016 Zhu, Wu, Yang and Gu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The sequence of events within a single trial in the monetary gambling task. In each trial, the beneficiary information lasted for 3000 ms then the fixation point lasted for 1200 ms. The participant was then presented with a choice of two alternatives, and the participant responded using the left or right index finger. The alternatives remained until the participant made his/her choice. Afterward, his/her choice was highlighted for 500 ms. After a subsequent interval of 8001200 ms, the participant received feedback, lasting 1000 ms, which indicated whether he/she gained or lost in that trial.