37 ms·
In the 90’s there were a few “mind Spas” in NYC offering time on some of these machines. Around this time Binaural Beats / Hemi-sync was also out there. https
by throwawayForMe2 4y ago
In the 90’s there were a few “mind Spas” in NYC offering time on some of these machines.
Around this time Binaural Beats / Hemi-sync was also out there.
https://en.wikipedia.org/wiki/Hemi-Sync https://en.wikipedia.org/wiki/Hemi-Sync
Both claiming to create brain wave entrainment and easier meditative states.