“…Moreover, most studies concentrated on the rhythms' impact on spectral characteristics of EEG signals, i.e., on changes of spectral power in the well-known alpha-, beta-, theta-, and deltafrequency band. Given recent technological developments that enable ultra-long (days to weeks and beyond) scalp (Casson, 2019), sub-scalp (Weisdorf et al, 2019;Duun-Henriksen et al, 2020), and intracortical (Zaer et al, 2021) EEG recordings in diverse applications (Aricò et al, 2018;Abiri et al, 2019;Cinel et al, 2019;Lohani et al, 2019;Alsuradi et al, 2020;Dehais et al, 2020;Rashid et al, 2020) even beyond clinical ones, it is important to understand the impact of endogenous and exogenous rhythms on characteristics of brain dynamics assessed with the aforementioned modern EEG analysis techniques.…”