The "Gateway Experience" referred to in the article was a residential program operated by the Monroe Institute.
It involved listening to audio recordings through headphones while immersed in a sensory deprivation tank. This was claimed to cause synchronization between the brain's hemispheres, leading to altered states of consciousness.
It involved listening to audio recordings through headphones while immersed in a sensory deprivation tank. This was claimed to cause synchronization between the brain's hemispheres, leading to altered states of consciousness.
https://en.wikipedia.org/wiki/Robert_Monroe
It seems the Monroe Institute is still offering the program, and has some free audio downloads:
https://www.monroeinstitute.org/gateway-voyage-audio
For the avoidance of all doubt: I have not drunk the Kool Aid. I was just curious about the back story to this article.