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. 2022 Mar 3;13:792872. doi: 10.3389/fpsyg.2022.792872

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Copyright © 2022 Cheron, Ristori, Petieau, Simar, Zarka and Cebolla.

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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The methodology used for the quantification of the alpha oscillation. (A) Detection of opening (pink line) and closing of the eyes (green line) in Fpz recording. The topographical map provided by the EEGLab toolbox for detecting the scalp electrode presenting the higher alpha power. (B) An example of 6 s of the filtered EEG data (8–14 Hz) recorded during the eye-closed (EC) state. (C) Fast Fourier transform of this data set corresponding of the EC state. (D) the same procedure as in C but during the EO state.