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. 2013 Nov 13;7:19. doi: 10.3389/fnbot.2013.00019

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Copyright © 2013 Urgen, Plank, Ishiguro, Poizner and Saygin.

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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Time-frequency plots for the three conditions (Human, Android, Robot) at channel C3 (left hemisphere). Plots for the right hemisphere (C4) were very similar and are not shown. The frequency axis is log scaled. The zero point on the time axis indicates the onset of the action movies. Shortly after the onset of the action videos, we observed an increase in the theta frequency band (see also Figure 4), followed by an attenuation in the alpha frequency band (8–13 Hz) that started around 350 ms, and grew stronger around 600 ms.