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. 2015 Oct 31;6:1691. doi: 10.3389/fpsyg.2015.01691

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Copyright © 2015 Del Zotto and Pegna.

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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It depicts the strong negative effect (VAN = visual awareness negativity) between 200 and 260 ms after the stimulus onset, over occipital brain regions, and are computed as the difference wave between masked and unmasked stimuli, independently of attentional condition and type of emotion. On the right side of the figure, scalp-current-density maps, computed in the same time window, show the electrical scalp distribution of masked (bottom), unmasked (middle) stimuli and their difference (top).