Last Updated on July 31, 2023 by pg@petergamma.org After several years of evaluation, we do not know if a single user who uses this cap. We could not find one, neither on Google Scholar, nor on Google picture search. If you know one, post it in the comments below. Or is something wrong with this … Continue reading Does the the greentek sleep eeg cap run for more than 10 seconds without too much noise in the EEG signal?