What is the name of the  Hemi-Sync founder's book that is credited with popularizing the term "out-of-body experience"?
Hemi-Sync:  Interstate Industries Inc., created by Hemi-Sync founder Robert Monroe, is the owner of the Hemi-Sync technology. Robert Monroe:  His 1971 book "Journeys Out of the Body" is credited with popularizing the term "out-of-body experience".
"Journeys Out of the Body"