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. 2021 Jun 15;11(6):557. doi: 10.3390/jpm11060557

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Averaged PSDs for the prefrontal and occipital cortex after the light stimulation. (A) shows averaged PSDs for the prefrontal ROI after the light stimulation. When comparing the PSD in the baseline EEG, EEG after 40 Hz-WL, and EEG after 40 Hz-VL conditions, there was no significant difference in any of the frequency bands; (B) shows averaged PSDs for the occipital ROI after the light stimulation. There was no significant difference in any of the frequency bands among the three conditions (i.e., baseline EEG, post-EEG with 40 Hz-WL, and post-EEG with 40 Hz-VL). The graphs are presented with ±S.D. shadows to the mean PSD for each condition.