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. 2018 Dec 13;9:2570. doi: 10.3389/fpsyg.2018.02570

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Copyright © 2018 Yang, Miskovich and Larson.

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) and the copyright owner(s) 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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(A) Stroop task. Each trial started with a color word shown on the screen for 600 ms, followed by a white fixation cross shown on the screen varying from 600 to 1,400 ms. The participants were asked to respond to the color of the words but not the meaning by pressing the same color button on the keyboard. There were two word conditions: Congruent and Incongruent. In congruent condition, the word reading and color naming were the same whereas the incongruent are not. (B) AX-CPT task. Each trial started when a white cue appeared on screen for 300 ms then masked for 400 ms. A fixation appeared on the screen for 1,600 ms, then the target was presented for 300 ms, then masked for 400 ms. The ITI varied from 600 to 1,400 ms, then the next trials started. Participants had 2,100 ms to respond.