There is an entire industry around this effect. https://en.m.wikipedia.org/wiki/...

		jonaustin on June 29, 2021 \| parent \| context \| favorite \| on: Simple test reveals if your mental images are more... There is an entire industry around this effect. https://en.m.wikipedia.org/wiki/Ganzfeld_effect https://mindplace.com/products/kasina-ganzframes Basically Sound and Light "Mind Machines" have been utilizing this effevt for decades.