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. 2020 Jul 16;14:271. doi: 10.3389/fnhum.2020.00271

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Copyright © 2020 Fresnoza, Christova, Purgstaller, Jehna, Zaar, Hoffermann, Mahdy Ali, Körner, Gallasch, von Campe and Ischebeck.

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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Experimental procedure. (A) Trial timing schema of the fMRI and rTMS experiment. In the fMRI experiment, a trial started with the presentation of a fixation cross for an average duration of 7,000 ms. Then the problems (with the solution and distractor) appeared for 5,000 ms. In the rTMS experiments, a trial started with the presentation of a fixation cross for an average duration of 3,000 ms. Then the problems (without the solution and distractor) appeared until the triggering of the voice-key. (B) Time course of the experiment. First, anatomical and functional MRI data sets were obtained. Then the participants underwent three sessions of rTMS stimulation (left AG, left hIPS, and vertex) in randomized order. rTMS was applied at 1 Hz for 15 min (900 pulses). fMRI, functional magnetic resonance imaging; rTMS, repetitive transcranial magnetic stimulation; AG, angular gyrus; hIPS, horizontal segment of the intraparietal sulcus.