Peter Gamma (Physiologist & Director) Meditation Research Institute Switzerland (MRIS)

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Unfortunately, the wonderful example of Krisztián Hofstädter with a Greentek Geelfree S2 EEG cap to have real-time demo of high alpha brain waves in OpenBCI GUI has disappeared from his YouTube channel:

Demo:

Krisztián Hofstädters YouTube channel:

https://www.youtube.com/@krishofstadter/videos

Did he do this at the wish of an EEG device manufacturer, so that the only options which is left to us is to buy a g.tec medical device?