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. 2022 Jul 14;16:941534. doi: 10.3389/fnsys.2022.941534

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Copyright © 2022 Ehret and Romand.

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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Separation of (A) awareness-related and (B) attention-related gamma-band activity when humans respond to a faint visual stimulus. Whether attended or not, a stimulus perceived with awareness induced mid-frequency gamma-band activity (about 54–64 Hz) at a latency of about 240 ms after stimulus onset (left panel). If spatial (selective) attention was directed to the stimulus, high-frequency gamma-band activity (about 76–90 Hz) occurred at a latency of about 350 ms after stimulus onset (right panel). In both panels the three stars indicate the highly significant effects in the framed areas. The brackets indicate the areas of a possible attention-related effect added to the awareness effect (left panel) or an awareness-related effect added to the attention effect (right panel). [Modified from Wyart and Tallon-Baudry (2008); their Figure 3C].