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. 2019 Feb 15;13:30. doi: 10.3389/fnhum.2019.00030

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Copyright © 2019 Hsu, Waszak and Hämäläinen.

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) Butterfly plot of the grand average signals of the gradiometers and the grand average global field power (GFP) of the gradiometers (across 14 participants and 32 conditions). The vertical lines mark the N1m and N2m peaks. (B) The topographies for the magnetometers at N1m and N2m peaks showing the magnetic field distribution. (C) Grand average source activity (across 14 participants and 32 conditions) at the N1m and N2m peak. The colored lines mark the outlines of the five brain regions selected to represent the auditory response.