We had no idea that sounds existed beyond the range of human hearing until we developed instruments to detect, measure, and create them. Until compar… - Robert Monroe

The first step in making some kind of sense out of this mass of raw data was to set up standards for measurement and analysis. After several attempts, it became apparent that only a few of the typical yardsticks could be applied. Therefore, assumptions or premises were made to permit identification in the sorting process, and the conclusions brought forth are only as valid as the premises on which they are based.

In the fall of 1964 an interesting meeting was held one evening in Los Angeles. It was composed of some twenty assorted psychiatrists, psychologists, scientists, et al—and myself. It was a most rewarding evening. The purpose of the meeting was to examine with sincerity and seriousness the experiences and experiments which have been condensed herein. After several hours of interrogation by the group, it was my turn. I asked two simple questions of each of them:
"If you were going through what I have been experiencing, what would you do?"...It was the definite opinion of the majority—more than two thirds—that every effort should be made to continue, such experimentation in the hope of enlightening and expanding man's knowledge of himself. Several half seriously stated that I should run, not walk, to the nearest psychiatrist. (None present offered his services.) The second question: "Would you, personally, take part in experiments that would lead to the creation of such unusual activity in yourself?"

To me, it was a place or condition of pure peace, yet exquisite emotion. It was as if you were floating in warm soft clouds where there is no up or down, where nothing exists as a separate piece of matter. The warmth is not merely around you, it is of you and through you. Your perception is dazzled and overwhelmed by the Perfect Environment. The cloud in which you float is swept by rays of light in shapes and hues that are constantly changing, and each is good as you bathe in them as they pass over you. Ruby-red rays of light, or something beyond what we know as light, because no light ever felt this meaningful. All the colors of the spectrum come and go constantly, never harshly, and each brings a different soothing or restful happiness... You respond and drink into you the eternity of the blues, yellows, greens, and reds, and the complexities of the intermediates. All are familiar to you. This is where you belong. This is Home... The mundane is missing. Choirs of human-sounding voices echo in wordless song. Infinite patterns of strings in all shades of subtle harmony interweave in cyclical yet developing themes, and you resonate with them. There is no source from which the Music comes. It is there, all around you, in you, you are a part of it, and it is you.