Adam J. Rock is a lecturer at the School of Behavioural, Cognitive and Social Sciences at the University of New England, Armidale, NSW, Australia. His primary research interests are in the area of altered states of consciousness, mainly focused on shamanism, the conceptual problem of consciousness, and mediumship. Harris L. Friedman , Ph.D., is an associated distinguished consulting professor at the California Institute of Integral Studies, an associated professor at the Salomons Institute for Applied Psychology at Canterbury Christ Church University (UK), and a visiting scholar at Harvard University. He retired as a research professor of psychology at the University of Florida.

Eric Ouellet , Ph.D., is a professor of defense studies at the Royal Military College of Canada, and at the Canadian Forces College (Canada's Joint Staff and War College). He is the liaison officer for Canada with the Parapsychological Association and is specialized in the study of extraordinary experiences involving Unexplained Aerial Phenomenon (UAP), taking a parapsychological approach. Jeffery A. Martin , Ph.D., specializes in researching and advancing the highest forms of human wellbeing.

For two decades he has conducted the largest international study on: enlightenment, nonduality, the peace that passeth understanding, unitive experience, and related trait experiences. This resulted in the first reliable, cross-cultural and pan-tradition classification system for these types of experiences. Stanley Krippner , Ph.D., former director of the Maimonides Medical Center Dream Research Laboratory, is a professor at California Institute of Integral Studies. He is a fellow in the American Psychological Association (APA) and the Association for Psychological Science.