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. 2018 Sep 6;9:1681. doi: 10.3389/fpsyg.2018.01681

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Copyright © 2018 Wagatsuma, Urabe and Sakai.

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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Procedure used in the psychophysical experiment. In this work, this procedure program was run after the calibrations. Participants were instructed to judge the DOF along the local contour passing through the screen center during the DOF discrimination task, which was instructed by the presentation of the red cross cue (left panel of the Cue). By contrast, the red Gaussian cue was given for the FG segregation task (right panel of the Cue). Under this condition, participants were asked to report which region, the red or green, appeared in front of the other. These cues were not represented at the location of the fixation point. Participants were instructed to respond to these tasks at the end of each trial (Response screen) using a two-alternative forced choice (2AFC) paradigm. Except for the presented stimuli in Test screen, this procedure is identical to that of our previous study (Wagatsuma et al., unpublished). See text for details.