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. 2017 Dec 11;11:695. doi: 10.3389/fnins.2017.00695

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Copyright © 2017 Lu, Yang, He, Jeon, Hou, Evans and Yao.

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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Illustration of the trials of all conditions in the experimental paradigm. For each trial, participants were asked to imagine improvising a melody piece according to different cues after a cross was shown for 2 s. The Familiar condition (A, used in both pilot and scanning), Unfamiliar condition (B, used in pilot; C, used in scanning) or Baseline condition (D, used in both pilot and scanning) appeared randomly and lasted for 14 s in the paradigm. After each imagery improvisation, participants were asked to give an evaluation score (from 0-unsatisfied to 3-satisfied) of their performance in a box within 4 s.