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. 2023 Dec 1;4:1207484. doi: 10.3389/fnrgo.2023.1207484

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Copyright © 2023 Nakazawa, Hirabayashi, Kawai, Kyutoku, Kawabata Duncan and Dan.

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) Trial procedure. The order of product images was displayed randomly. Numbers above product images indicate relative rewards in percentage. Upon turning into green light, the relative reward indicator drops rapidly from 100% until a participant react to the green light. Consequently, obtained relative reward (in this example, 21) is shown. When a participant makes a false start, a small penalty is given (i.e.,−10). (B) Schematic showing an experimental block. The order of assembling and handling was random.