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. 2019 Sep 4;10:2026. doi: 10.3389/fpsyg.2019.02026

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Copyright © 2019 Roden, Früchtenicht, Kreutz, Linderkamp and Grube.

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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Visualization of the frequency spectrum of the ASTM. Condition (A) represents the visualization of the frequency spectrum of the ASTM with unmanipulated music. The dark area represented the sound volume of the orchestra, the brighter area were the solo instruments. The horizontal stripes that emerged were the natural overtones of the violins. Condition (B) showed the frequency spectrum with manipulated music, where high and medium frequencies (>2000 Hz) are compressed at intervals. Moreover, the medium and high frequencies were lateralized in a way that they were strongly condensed on the left ear while being shut down on the right ear at the same time and vice versa.